Oatmeal Chocolate Chip Cookie Cake

Amy Manes
by Amy Manes
16 slices
1 hr 10 min

If you like cookies and you like cake, then you will love this easy-peasy oatmeal chocolate chip cookie cake! It is chewy and dense like an oatmeal chocolate chip cookie, yet fluffy like the perfect slice of cake! This sheet cake is topped with cookie butter frosting, which goes so well with the cookie-like cake! If you’ve never had cookie butter before, think of it like a spread that has the consistency of peanut butter but the taste of a delicious graham cracker! It is absolutely perfect on top of this cake. You can order cookie butter on Amazon or find it at your local grocery store (I always find it in the baking/bread section at my store!)

Oatmeal Chocolate Chip Cookie Cake
Recipe details
  • 16  slices
  • Prep time: 30 Minutes Cook time: 40 Minutes Total time: 1 hr 10 min
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Ingredients
For the Oatmeal Chocolate Chip Cookie Cake
  • 1¼ cups boiling water
  • 1 cup oatmeal (not the quick cook kind)
  • ½ cups unsalted butter (room temperature)
  • 1 cup granulated sugar
  • 1 cup brown sugar
  • 2 large eggs
  • 1½ cups all-purpose flour
  • 1 tsp baking soda
  • ½ tsp salt
  • ¾ tsp cinnamon
  • ¼ tsp nutmeg
  • 1 tsp vanilla extract
  • ½ cup mini chocolate chips
For the Cookie Butter Frosting
  • ¾ cup unsalted butter (room temperature)
  • ½ cup cookie butter (can be found on Amazon)
  • 2 tsp vanilla extract
  • 3 cups powdered sugar
  • 3 tbsp heavy cream
  • ½ tsp salt
  • mini chocolate chips for topping, if desired
Instructions
For the Oatmeal Chocolate Chip Cookie Cake
Preheat oven to 350°F. Grease and line a 9×13 inch cake pan with parchment paper and set aside.
Pour the boiling water over the oatmeal and cover. Let sit for 20 minutes.
In a medium bowl, whisk together the flour, baking soda, salt, cinnamon and nutmeg. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment, or in a large bowl with a hand mixer, cream the butter and sugars together on medium-high speed until light and fluffy (about 3 minutes). Add the eggs one at a time, beating after each addition. Scrape down the bowl as necessary.
Add the oatmeal and dry ingredients to the wet ingredients, alternating the oatmeal and dry ingredients. Beat on low after each addition, but do not overmix.
Pour batter into the prepared cake pan and bake for 30-40 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
Remove cake from the oven and let cool in the pan on a wire rack. Frost with buttercream once cooled.
For the Cookie Butter Frosting
In the bowl of a stand mixer fitted with the paddle attachment, or in a large bowl with a hand mixer, beat the butter and cookie butter on medium-high speed until smooth.
With the mixer on low, add the vanilla extract, powdered sugar, heavy cream and salt. Increase speed to medium-high speed and beat until light and fluffy. Frost your cooled cake and enjoy!
Tips
  • This cake can be stored at room temperature in an airtight container for up to 3 days. You can also wrap individual slices in plastic wrap and stick in a freezer bag to freeze and enjoy later!
  • High Altitude Directions (those living above 3,000 feet): Granulated Sugar – decrease by 1 tbsp Brown Sugar – decrease by 1 tbsp Flour – increase by 2 tbsp Eggs – use 3 instead of 2 Baking Soda – decrease to 1/2 tsp Increase oven temperature to 365° F Decrease baking time by 5 or more minutes
  • Brown Sugar – decrease by 1 tbsp
  • Eggs – use 3 instead of 2
Amy Manes
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