Chocolate Mayonnaise Sheet Cake

Ingredients

Cake Batter

• 2 cups all-purpose flour
• 2/3 cup unsweetened cocoa powder
• 1 teaspoon baking soda
• 1/2 teaspoon cinnamon
• 1/4 teaspoon salt
• 1/4 teaspoon baking powder
• 3 large eggs
• 1 2/3 cups packed light brown sugar
• 2 teaspoons vanilla extract
• 1 cup mayonnaise
• 1 1/3 cups hot water

Frosting

• 1 (8-ounce) package cream cheese,, softened
• 1/2 cup butter,, softened
• 2 teaspoons vanilla extract
• 1/2 cup unsweetened cocoa powder
• 4 1/2 to 5 cups powdered sugar
• 2 tablespoons heavy cream

Equipment Baking spray with flour

Steps

1. 1

   Preheat oven to 350 degrees and spray a 9x13-inch pan with baking spray with flour.

2. 2

   In a medium bowl, whisk together the flour, cocoa powder, baking soda, cinnamon, salt, and baking powder. Set aside.

3. 3

   Using an electric mixer, beat eggs, brown sugar, and vanilla extract at medium-high speed for 3 minutes.

4. 4

   With mixer on low, add mayonnaise and beat just until combined.

5. 5

   Alternate between adding flour mixture and hot water, (adding flour in 3 additons and water in two and beating just until mixed in before adding next addition).

6. 6

   Pour batter into prepared pan and bake for 30 to 35 minutes. Let cool before frosting.

7. 7

   To make frosting, beat cream cheese, butter and vanilla with an electric mixer until creamy.

8. 8

   Whisk together the cocoa powder and powdered sugar. Beat half the mixture into the butter mixture.

9. 9

   Beat in the heavy cream and then the remaining powdered sugar mixture. If too thick, add a little more cream.

10. 10

    Spread frosting on cake.

Notes