1 Bowl Baked Oatmeal

Baked oatmeal is bread pudding for breakfast! Made with a handful of healthy ingredients, this easy recipe comes together in 1 bowl and leaves you satisfied all morning.

square of baked oatmeal on a white plate

What is Baked Oatmeal?

Baked oatmeal is a warm breakfast casserole made from oats, milk, and other kitchen staples. Stovetop or instant oatmeal has a creamy porridge consistency, but baked oatmeal, like bread pudding, combines chewy, soft, and creamy all in 1 casserole dish. You can add berries for a juicy burst and walnuts for a crunchy topping. This breakfast recipe is a texture lover’s dream and your oven does all the work.

Basically, baked oatmeal is regular oatmeal with even more texture. If you’re looking for individual serving sizes, try my baked oatmeal cups. I love the apple cinnamon flavor!

You can bake oatmeal ahead of time and reheat it for a quick breakfast during the week. That’s exactly what I’ve been doing and the whole family, young daughter included, LOVES it. Busy parents certainly appreciate the convenience!

overhead image of baked oatmeal in white 9x13 baking dish

ingredients in baked oatmeal

Video Tutorial: How to Make Baked Oatmeal


Gluten Free, Healthy, 1 Bowl Breakfast

This baked oatmeal combines simple and healthy ingredients and can be adapted for any allergies or flavor preferences. Stir the ingredients together in 1 large bowl, pour it into a greased baking pan, and bake. You need:

  1. Oats: I recommend whole old-fashioned style oats for a hearty and satisfying texture. If you eat gluten free, choose certified GF oats.
  2. Milk: Use the variety of milk you drink. This baked oatmeal is wonderful with whole milk, almond milk, oat milk, coconut milk, skim milk, and everything in between.
  3. Eggs: 2 large eggs, while adding protein, bind all of the ingredients together. Have an egg allergy? Use extra applesauce or mashed banana.
  4. Applesauce or Mashed Banana: Adds flavor and binds. You can use more of either to replace the eggs.
  5. Maple Syrup: I recommend pure maple syrup for the best flavor, but other unrefined sugars such as coconut sugar or honey work too. 1/2 cup sweetens the entire dish.
  6. Baking Powder: Lifts it all up!
  7. Melted Butter: A few Tablespoons of butter prevents the dish from tasting rubbery. Don’t replace with a non-fat alternative. Melted coconut oil is a wonderful dairy-free substitution.
  8. Vanilla, Cinnamon, & Salt: Each add sweet satisfying flavor.
  9. Berries: I asked, you told, and I’m delivering! Add some fruit for flavor, texture, and all-around deliciousness. Replace with chopped banana, apple, peaches, pears, raisins, dried berries, chocolate chips, or even a spoonful of your favorite nut butter.

2 images of baked oatmeal mixture in a glass bowl and in white baking dish before baking

berry baked oatmeal in a white casserole baking dish

For the BEST baked oatmeal texture: use whole oats and don’t over-bake! You want a deliciously soft & moist spoonful.

Ok let’s recap…

This Baked Oatmeal Is:

  • Prepped in 1 bowl
  • Made with unrefined sugar
  • Not overly sweet
  • Packed with fruit
  • Warm & satisfies for hours
  • Soft, chewy, & creamy
  • Adaptable for flavors, allergies, etc

Plus it requires minimum effort– just what our mornings need!

close up image of healthy baked oatmeal in baking dish

Complete your breakfast! Serve baked oatmeal with Greek yogurt, fresh fruit, scrambled eggs, sunshine smoothies or smoothie bowls, breakfast sausage, or my 110 calorie crustless veggie quiche. (–> also simple, healthy, & gluten free!)

Craving Pumpkin Baked Oatmeal?

I love turning this into pumpkin baked oatmeal! Here’s what I usually do: Reduce milk to 1 and 1/2 cups, remove the applesauce and 1 egg and replace with 3/4 cup of pumpkin puree, add 1 and 1/2 teaspoons pumpkin pie spice, keep the cinnamon in the recipe, leave out the berries and replace with chopped nuts, chocolate chips, dried cranberries, or leave plain. You’ll love my pumpkin baked oatmeal cups, too.

Print
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square of baked oatmeal on a white plate

1 Bowl Baked Oatmeal

  • Author: Sally
  • Prep Time: 5 minutes
  • Cook Time: 35 minutes
  • Total Time: 45 minutes
  • Yield: serves 9
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American

Description

This baked oatmeal combines simple ingredients that can be adapted for any allergies or flavor preferences. It’s like bread pudding for breakfast– creamy, soft, chewy, and delicious all in one! Make ahead and enjoy all week long. Try my baked oatmeal cups, too!


Ingredients

  • 1 and 3/4 cups (420ml) milk (dairy or nondairy)
  • 2 large eggs*
  • 1/2 cup (120ml) pure maple syrup*
  • 1/4 cup (60gunsalted butter, melted and slightly cooled*
  • 1/4 cup (60g) unsweetened applesauce or mashed banana
  • 3 cups (240g) old-fashioned whole oats*
  • 1 teaspoon baking powder
  • 1 teaspoon ground cinnamon
  • 1 teaspoon pure vanilla extract
  • 1/4 teaspoon salt
  • 1 and 1/2 cups mixed berries, fresh or frozen (do not thaw)*
  • optional for topping: 1/2 cup chopped walnuts or pecans

Instructions

  1. Adjust the oven rack to the lower third position and preheat the oven to 350°F (177°C). Spray a 9×9 inch or 11×7 inch baking pan with nonstick spray. Any similar size or shape pan works, though 8×8 inch would be too small. See recipe note for 9×13 inch pan.
  2. Whisk all of the ingredients together in 1 large bowl. Pour into prepared baking pan. Top with nuts, if desired. (Or stir into the oatmeal.) Bake for 35 minutes or until the center appears *almost* set, which gives us a soft oatmeal as pictured above. For drier and more solid baked oatmeal, bake until center has set.
  3. Cool for 5 minutes before serving. Spoon or slice and serve with yogurt, if desired. Cover leftovers tightly and refrigerate for up to 1 week.

Notes

  1. Make Ahead Instructions: Bake the oatmeal, cool completely, and store in the refrigerator all week for easy breakfasts. Reheat in the microwave or cover and bake in a 350°F (177°C) oven for 10 minutes. To freeze, bake and cool oatmeal. Cover tightly and freeze for up to 3 months. Thaw in the refrigerator or at room temperature. Warm to your liking. I love cutting the cooled baked oatmeal into bars or servings and freezing them individually for a quick breakfast to thaw. Wrap each in plastic wrap and place in a large freezer bag or container.
  2. Don’t: Do not make oatmeal batter ahead of time. The oats will soak up all the liquid! Whisk it all together, then bake right away. See make ahead instructions above for alternative.
  3. Eggs: Eggs bind the casserole and add wonderful flavor. If needed, you can replace the eggs with 1/3 cup unsweetened applesauce or mashed banana.
  4. Sugar: I recommend pure maple syrup because the flavor is outstanding and the baked oatmeal is extra moist! You can also use packed brown sugar, coconut sugar, or honey.
  5. Butter: What wonderful flavor! The baked oatmeal can taste rubbery without it. Don’t replace with a non-fat alternative. Melted coconut oil is a wonderful dairy-free substitution.
  6. Oats: Whole oats give you the best texture. Quick oats soak up more moisture and dry out the baked oatmeal. If using steel-cut oats, soak the oats in the milk for 20 minutes, then stir in the rest of the ingredients. Add a few extra minutes to the bake time.
  7. Add-ins: Instead of berries, try the same amount of peeled chopped apples, peaches, pears, bananas, or other fruit. Or 1 cup chocolate chips, dried cranberries, nuts, or raisins.
  8. 9×13 inch Pan: Double the recipe for a 9×13 inch pan. The baked oatmeal will be extra thick and require at least 10 extra minutes in the oven. Tent with aluminum foil if the edges are browning too quickly.
  9. Nutrition Information per Serving (with unsweetened applesauce and unsweetened almond milk using Spark Recipe Calculator): Calories 227, Total Fat 8g, Carbohydrate 34g, Dietary Fiber 4g, Sugars 15g, Protein 5g.

pice of baked oatmeal on a white plate with toppings

448 Comments

  1. These bars are so good and healthy too! I like mine warmed up. I added strawberries and blueberries for fruit and both made a really great combination. I love this recipe!

  2. Hi there,

    Hoping to try your recipe this week as an easy breakfast. It looks amazing! I was curious if you have any suggestions for substituting the maple syrup. I try really hard to keep my sugars to a absolute minimum and was curious if substituting or completely removing the maple syrup would work for this recipe. Maybe adding more banana as a natural sweetener? Thanks!

    1. Stephanie @ Sally's Baking Addiction says:

      Hi Amber, You can leave it out or increase the banana or applesauce to replace it. This recipe is very forgiving. (We make different variations all the time!)

  3. Yum!!!!!! So easy to make. I made the following substitutions based on what I had on hand: Mashed Banana (instead of applesauce), Coconut Oil (instead of butter), and Diced Apples (instead of berries).

    I only had unrefined virgin coconut oil, and that flavor was pretty dominant throughout, especially with 1/4 cup. Although it was still good, I know it would taste even more delicious with butter!

  4. I probably shouldn’t have even attempted this recipe with the number of substitutions I had to make, but I’m glad I did. It turned out so well! I had no milk, no baking powder, and not enough syrup. I subbed water, baking soda, 1/4c syrup + 3 tbsp honey, and added 2 big dollops of cottage cheese. Also added 8 tbsp egg whites instead of eggs. I divided into 2 loaf pans and took 10 minutes off baking time. I imagine it would be fluffier with baking soda, but still dang good! Excited to try again with all the right ingredients.

  5. Michelle Strydom says:

    Hi Sally! I love this recipe, perfect everytime! Would it be possible to half the recipe? x

    1. Lexi @ Sally's Baking Addiction says:

      Hi Michelle, yes, you can cut it in half. You can use a loaf pan or anything similar and decrease the baking time. Or, this recipe freezes wonderfully if you’d like to make a full size and freeze half for later!

  6. How many serving does it make

  7. Great recipe! I’m trying to eat healthier breakfasts and this is so easy to make and eat for the rest of the week! Have made with apples, today I’m trying out blueberries and it smells wonderful.

  8. Lindsey Paulin says:

    Thanks so much for the pumpkin variation! We have this in our weekly rotation with two littles and they eat it up so quickly! So thankful for all your recipes. Always wonderful!

  9. I would really appreciate advice on how to start with packets of instant oatmeal, and what to add to that. I need as simple and quick as possible, unfortunately that is the necessary reality of my life right now. Even if it makes a small batch. Thanks!

    1. Hi Amy, that would require additional testing. Perhaps there are other recipes that are formulated for instant oatmeal packets instead. You could try using them and then leaving out the maple syrup and other flavorings, but again– that would require testing.

  10. What is the nutritional info for this recipe ?

    1. Lexi @ Sally's Baking Addiction says:

      Hi Elle, see recipe notes for nutritional information by serving. However, nutrition information can vary between different brands of the same ingredients. Plus, many recipes have ingredient substitutions or optional ingredients listed. There are many handy online calculators where you can plug in and customize your exact ingredients/brands. Readers have found this one especially helpful: https://recipes.sparkpeople.com/recipe-calculator.asp

  11. I have made this recipe many times in the last month since I discovered it. It is an amazing, healthy oatmeal with wonderful flavor and texture. I have shared the recipe to family and friends who are now believers. I use skim milk, Red Hill Rolled Oats, and the suggested real maple sugar.

  12. I have made this countless times. It is a warm comforting, feel good breakfast. I accompany it with a little greek or skyr yogurt. It’s hard to have only one serving!

  13. Delicious and easy! Everyone that tried it loved it.

    (Note to banana haters – my husband couldn’t taste the banana at all.)

  14. Hey Sally,
    Can I do this with steel cut oats?? Husband bought the Costco size and I’m swimming in them. Haha! Thanks!!

    1. Trina @ Sally's Baking Addiction says:

      Yes! See recipe notes for special instructions for steel cut oats.

  15. I love this recipe ! Definitely fool proof and I feel like I am eating dessert for breakfast. I also love that it comes together quickly and can last in the fridge all week. I made it exactly per the recipe the first time. Since then I have substituted coconut oil for the butter and cut the maple syrup to 1/4 cup. I find mashing in one ripe banana adds enough sweetness to make up for it. My youngest has asked me to make it with apples since she doesn’t like the texture of the cooked berries so I will try that next.

  16. I am so excited to make this, and try the pumpkin variation. Probably going to make the base recipe and do different variations – thank you!!

    Do you think you could potentially sub the butter / coconut oil with nut butter?

    1. Lexi @ Sally's Baking Addiction says:

      Hi Alex, definitely. We make it with peanut butter or almond butter all the time. We usually reduce the butter down to 2 Tbsp and add 1/2 cup of our favorite nut butter. Same bake time. Let us know what you try!

  17. I made this tonight so I could bring it to work with me in the morning!

    I made it vegan, substituting the eggs with extra apple sauce.
    And replaced the butter with coconut oil.
    I used frozen rhubarb and strawberries in mine for fruit!

    Super tasty!

  18. Sallie Yoder says:

    I have been making a version of this or the oatmeal cups weekly to take to work for breakfast. It’s SO forgiving and easy to make substitutions. I like to add chia seeds and whatever fresh fruit I have around. Thank you for a breakfast that I look forward to each day!

  19. Amazing recipe! I have made this 3 times so far. I plan to serve at an upcoming bridesmaid breakfast. I baked these in cute 5oz baking cups from sophistiplate.com (wish I could attach a picture). I cooked these 25 minutes and they were perfect – topped with vanilla yogurt. Thanks for the delicious and super easy recipe! P.S. Learned that I should keep open pure maple syrup in the refrigerator!

  20. I love your recipes, one of my favorite go-to sites! Made this, this morning. kitchen smelled delightful – reduced maple syrup to 1/4 cup and used unsweetened almond milk… but left in oven additional 20 min – sides just starting to crisp (I was going for the more baked version) it was not coming together and is still very very moist..just barely keeping shape. Tastes great but any suggestions? Less milk?
    Thanks,Catherine

    1. Lexi @ Sally's Baking Addiction says:

      Hi Catherine, glad you enjoyed this recipe! This is a moist dish and will not completely “crisp.” The middle will stay soft and look just slightly set, but you can bake for a bit longer (as you mention) if you’re looking for a firmer center. We wouldn’t recommend reducing the milk at all for fear it wouldn’t hold together and become too dry. Hope this is helpful!

  21. Devonne L Newsome says:

    Oh Sally, you are a keeper!! I ran across your website yesterday and I am a fan already! I made the baked oatmeal this morning and oh my gosh! It was picture perfect and delicious! I wish we could attach pictures. I used unsweetened almond milk, substituted the butter for coconut oil, substituted the maple syrup for unsweetened pancake syrup (I had that in my pantry), I added a mashed banana, blueberries and extra cinnamon. I will definitely make this often and continue to follow you. Thank you and God Bless You!

    1. Lexi @ Sally's Baking Addiction says:

      Thank you so much for the kind and thoughtful note, Devonne! We’re thrilled you came across our site and that you enjoyed this baked oatmeal recipe. Happy baking to you!

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