M&Ms Peanut Butter Cake with Peanut Butter Frosting
This M&Ms Peanut Butter Cake with Peanut Butter Frosting is a rich, moist dessert packed with candy-coated crunch and creamy peanut butter bliss. Perfect for parties, birthdays, or anytime you’re craving something sweet, colorful, and crowd-pleasing.
Ingredients
For the Cake:
- 2 1/2 cups all-purpose flour
- 2 1/2 tsp baking powder
- 1/2 tsp salt
- 1/2 cup unsalted butter softened
- 1/2 cup creamy peanut butter
- 1 1/2 cups granulated sugar
- 4 large eggs
- 1 tsp vanilla extract
- 1 cup whole milk
- 1 1/2 cups M&Ms plus extra for topping
For the Peanut Butter Frosting:
- 1 cup creamy peanut butter
- 1/2 cup unsalted butter softened
- 2 1/2 –3 cups powdered sugar
- 1/4 cup heavy cream or milk
- 1 tsp vanilla extract
- Pinch of salt
Instructions
- Preheat oven to 350°F (175°C). Grease and line two 8-inch round cake pans.
- In a bowl, whisk flour, baking powder, and salt. Set aside.
- In a large bowl, beat butter, peanut butter, and sugar until fluffy.
- Add eggs one at a time, beating well, then mix in vanilla.
- Alternate adding flour mixture and milk to the wet mixture.
- Fold in M&Ms gently.
- Divide batter between pans and bake 25–30 minutes or until a toothpick comes out clean.
- Cool cakes in pans 10 minutes, then turn out onto racks.
- For the frosting, beat peanut butter and butter until creamy.
- Add powdered sugar, vanilla, and cream gradually. Beat until fluffy.
- Frost the first cake layer, stack the second, and frost the top and sides.
- Decorate with extra M&Ms. Chill slightly before slicing for clean edges.
Notes
Use mini M&Ms for a more uniform crunch. For extra indulgence, stir in chocolate chips or drizzle melted chocolate over the frosted cake.