Description
This is soft and buttery white cake filled with cream-filled chocolate sandwich cookies (Oreos!). Top with light and fluffy whipped cream frosting. Each ingredient serves a purpose so for best results, I don’t recommend making substitutions.
Ingredients
- 2 and 1/2 cups (285g) cake flour (spooned & leveled)
- 2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 1 teaspoon salt
- 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature
- 1 and 1/2 cups (300g) granulated sugar
- 4 large egg whites, at room temperature
- 3/4 cup (180g) sour cream, at room temperature
- 1 Tablespoon pure vanilla extract
- 3/4 cup (180ml) whole milk, at room temperature*
- 1 and 1/4 cups chopped Oreos (110g, about 10 whole Oreos)*
Whipped Cream Frosting
- 6 ounces (170g) full-fat brick cream cheese, softened to room temperature
- 3/4 cup (90g) confectioners’ sugar
- 1 teaspoon pure vanilla extract
- 1 and 1/2 cups (360ml) cold heavy cream or heavy whipping cream
- 1 cup chopped Oreos (90g, about 8 whole regular Oreos)*
- optional: mini or regular Oreos for garnish
Instructions
- Make the cake: Preheat the oven to 350°F (177°C). Generously grease a 9×13-inch cake pan.
- Whisk the cake flour, baking powder, baking soda, and salt together. Set aside.
- Using a handheld or stand mixer fitted with a whisk attachment, beat the butter on high speed until smooth and creamy, about 1 minute. Add the sugar and beat on high speed for 2 minutes until creamed together. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed. Add the egg whites. Beat on high speed until combined, about 2 minutes. Then beat in the sour cream and vanilla extract. Scrape down the sides and up the bottom of the bowl as needed. Mixture will appear curdled and that’s ok. With the mixer on low speed, add the dry ingredients just until incorporated. With the mixer still running on low, slowly pour in the milk until combined. Do not overmix. Whisk it all by hand to make sure there are no lumps at the bottom of the bowl, then fold in the chopped Oreo pieces. Avoid over-mixing.
- Pour batter into prepared cake pan. Bake for around 32–35 minutes or until the cake is baked through. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, it is done. Allow cake to cool completely in the pan set on a wire rack. The cake must be completely cool before frosting.
- In a large bowl using a handheld or stand mixer fitted with a whisk attachment, beat the cream cheese on medium-high speed until creamy, about 1 minute. Scrape down the sides and up the bottom of the bowl and beat again as needed until creamy. Add the confectioners’ sugar and vanilla extract, and then beat on medium speed until combined and completely smooth, about 2 full minutes. Scrape down the sides and up the bottom of the bowl. Switch the mixer to low speed and with the mixer running, carefully pour in the cream in a slow and steady stream. After all of the cream has been added, turn the mixer up to high speed and beat until thick and stiff peaks form, about 1–2 minutes.
- Frost the cake: If you’d like to pipe any frosting on the cake like I did in the photo above, set aside about 1 cup of frosting. Fold chopped Oreos into remaining frosting (or all of the frosting if you are not piping any of it). Spread onto cooled cake—it will be a thick layer of frosting. I find a small offset spatula is best for frosting 9×13-inch sheet cakes. For the pictured piping, I used a Wilton 1M piping tip and piped a zigzag design around the border.
- Serve immediately or cover and set aside for a few hours before serving. Or cover and refrigerate for up to 1 day, then bring to room temperature before serving. You can definitely serve the cake cold, but many preferred it closer to room temperature. Frosting is sturdy enough at room temperature or in warmer weather for a few hours.
- Cover leftover cake tightly and store in the refrigerator for up to 5 days.
Notes
- Make Ahead & Freezing Instructions: The cake can be baked, cooled, and covered tightly at room temperature overnight. The frosting can be prepared then covered and refrigerated overnight. Assemble and frost the cake the next day when you are ready to serve. Frosted cake can be frozen up to 2 months. Thaw overnight in the refrigerator and bring to room temperature before serving. Here’s my how to freeze cakes page.
- Special Tools (affiliate links): 9×13-inch Cake Pan | Glass Mixing Bowl | Whisk | Electric Mixer (Handheld or Stand) | Cooling Rack | Small Offset Spatula | Piping Bag (Reusable or Disposable) | Wilton 1M Piping Tip
- Whole Milk & Sour Cream/Room Temperature Ingredients: Whole milk and sour cream are strongly recommended for the best taste and texture. A full-fat plain yogurt would work instead of the sour cream, but the cake may not taste as light. Same goes with a lower-fat milk. All refrigerated items should be at room temperature so the batter mixes together easily and evenly. Read here for more information.
- Layer Cake: Grease 3 8-inch or 2 9-inch round cake pans, line with parchment paper rounds, then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. Divide the batter between the pans. Bake at 350°F (177°C) for around 24–26 minutes or until the cakes are baked through. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, the cakes are done. The frosting yields enough for filling and frosting a 2 -or 3-layer cake.
- Cupcakes: My vanilla cupcakes recipe is essentially this same recipe, only halved, so I recommend using that. Fold in about 3/4 cup of chopped Oreo pieces before spooning/pouring batter into liners. Halve the frosting recipe above. For close to 3 dozen cupcakes, follow the the cookies & cream cake batter recipe above and the baking instructions for cupcakes. Use the frosting recipe as written above.
- Amount of Cake Batter & Frosting: If it’s helpful for using different size cake pan sizes and conversions, this recipe yields about 7 cups of cake batter and 4–5 cups of frosting.