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

482 Comments

  1. I really liked the flavor (and so did my family!) but for some reason it all fell apart when we cut into it! Any suggestions on how to help it stick together better? Maybe I did something wrong…

    1. Lexi @ Sally's Baking Addiction says:

      Hi Christina, if you’re looking for a “sturdier” baked oatmeal, you can try baking for a minute or two longer next time. That will help the oats to stick together more when cutting. Also, the longer you let it cool, the cleaner the cut pieces will be. Glad to hear your family enjoyed this one!

    2. Wanted to try the baked oatmeal craze and of course looked to one of my fav bloggers …Sally! OMG. It’s to die for. Whipped cream on top is essential. Thanks, Sally.

  2. Thus tastes amazing warm or cold. I used steel cut oats and skipped the eggs. Thank you! Also your notes about substitutions were helpful. I skipped the eggs, used coconut sugar, etc. Brilliant!

  3. Sandra Osnaya says:

    I would like to use egg whites only
    Do I need to substitute something or add something else to do so ?
    Thanks Sally
    I love your Baking Challenges

    1. Stephanie @ Sally's Baking Addiction says:

      Hi Sandra, You can certainly try! Or you can replace the eggs with 1/3 cup unsweetened applesauce or mashed banana.

  4. What is a serving? 1/2 cup, a cup?

    1. Lexi @ Sally's Baking Addiction says:

      Hi Laura, the nutrition information given in the recipe notes is based on the recipe as written for 9 servings.

  5. WOW, I never comment on recipes (even the ones I like) but I had to leave a comment here. This recipe is SO GOOD, it tastes like dessert for breakfast! Or dinner, for my case tonight hehe. I substituted extra mashed banana in place of the apple sauce/maple syrup (I used about 1 1/3 ripe banana in total) and it was amazing.
    Topped with some plain yogurt and a little drizzle of maple syrup? Like seriously my new favourite thing. And it was so easy to make :’) <- me crying tears of joy b/c I found my new fave recipe. THANK YOU!

    1. Trina @ Sally's Baking Addiction says:

      We’re so glad you love this baked oatmeal recipe, Emily!

  6. Mohd Farhan says:

    Hi, can I use rolled oats instead of whole oats

    1. Lexi @ Sally's Baking Addiction says:

      Hi Mohd, yes! Rolled oats can also be called old-fashioned or whole oats, which are perfect for this recipe.

  7. I replaced the milk with a can of coconut milk and making up the rest of the volume with regular milk. It turned out creamy and delicious

    1. Trina @ Sally's Baking Addiction says:

      Thanks for letting us know coconut milk worked, Kelly! So glad you loved it.

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