Best Brownie Cake (Chocolate Bundt Cake with Peanut Butter Filling)

A slice of brownie cake showing the fudgy chocolate cake and creamy peanut butter filling inside.

Best Brownie Cake (Chocolate Bundt Cake with Peanut Butter Filling)

This Brownie Cake is a rich, fudgy chocolate bundt made from cake mix and brownie mix, stuffed with a creamy peanut butter cheesecake filling and drizzled with ganache. An easy, decadent dessert.

Course Dessert

Cuisine American

Keyword brownie cake

Prep Time 20

Cook Time 1

Servings servings

Calories 602kcal

Author Jason Decker

Ingredients

For the cake:

For the filling:

Instructions

Preheat oven to 350*F degrees. Grease a 10-cup standard-sized bundt pan with baking spray (the kind that has flour in it) and set aside.
Combine the cake mix, brownie mix, eggs, water, and oil in a large mixing bowl. Check what ingredients your particular mixes call for, as it might differ slightly from what is listed. Just make sure to add the listed ingredients for both mixes they call for on the back of the box.
1 15.25 oz. chocolate cake mix, 1 18.3 oz. brownie mix, 5 large eggs, 1 & 1/4 cups water, 1 cup vegetable oil
Pour half of the batter into the prepared bundt pan.
In a medium mixing bowl, combine the cream cheese, sugar, egg, and peanut butter until smooth with an electric hand mixer.
8 ounces cream cheese, ⅓ cup granulated sugar, 1 large egg, ¼ cup peanut butter
Add spoonfuls of the peanut butter mixture all on top of the cake batter.
Top the peanut butter mixture with the rest of the cake batter.
Transfer your bundt pan to a baking sheet and bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean.
Cool the cake for 10 minutes before inverting it onto a wire rack to cool it completely.
Once cool, heat up the heavy whipping cream in the microwave for 30 seconds to a minute. The cream should be hot (90-110°F).
½ cup heavy whipping cream
Add the chocolate chips to the cream and let sit for 5 minutes.
½ cup semi sweet chocolate chips
Stir the chips and cream together until melted and shiny.
Drizzle the chocolate ganache all over the top of the cake.
In a small microwave-safe bowl, melt your peanut butter for 20 seconds.
½ cup peanut butter for garnish
Drizzle the peanut butter over the top of the cake.
Immediately sprinkle chopped or whole mini reeses cups on top of the glaze. Allow the cake to sit for at least 30 minutes for the glaze to set, slice, and serve.
Mini peanut butter cups for garnish

Notes

Use a large mixing bowl when combining ingredients to avoid a mess.
Always make sure your cream cheese is at room temperature for a smoother filling.
Use an electric mixer for the best and fluffiest cake batter.
Always place your bundt pan on a baking sheet to keep that oven clean!
A rubber spatula is the perfect thing for scraping down the sides of the bowl. Make sure all the ingredients are mixed!
If your brownie cake comes out too dry, no worries! A simple syrup drizzle can bring it back to life.

Nutrition calculated without the peanut butter cup garnish.

Nutrition