Ingredients
Scale
Dry Ingredients:
- 2 cups all-purpose flour
- ¾ cup unsweetened cocoa powder
- 1 ¼ teaspoons baking soda
- 1 teaspoon baking powder
- ½ teaspoon salt
Wet Ingredients:
- 1 cup granulated sugar
- ½ cup brown sugar
- 1 cup mayonnaise (full-fat for best results)
- 1 ¼ cups water (or brewed coffee for extra depth)
- 2 teaspoons vanilla extract
For the Frosting (Optional but Recommended!):
- 1 cup unsalted butter, softened
- 2 ½ cups powdered sugar
- ½ cup unsweetened cocoa powder
- ¼ cup heavy cream (adjust for consistency)
- 1 teaspoon vanilla extract
Instructions
- Preheat & Prep
Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan or two 9-inch round cake pans. - Mix the Dry Ingredients
In a large bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt. - Combine Wet Ingredients
In another bowl, mix the granulated sugar, brown sugar, mayonnaise, water (or coffee), and vanilla extract. Stir until smooth. - Bring It Together
Gradually add the dry ingredients into the wet mixture, stirring just until combined. Don’t overmix! - Bake It Up
Pour the batter into your prepared pan(s) and bake for 30-35 minutes (for a 9×13) or 25-30 minutes (for rounds). A toothpick inserted in the center should come out with a few moist crumbs. - Cool & Frost
Let the cake cool completely before frosting. For the frosting, beat butter until fluffy, then gradually add powdered sugar, cocoa powder, cream, and vanilla. Spread over the cake and enjoy!
- Prep Time: 10 min
- Cook Time: 30 min