Chocolate Marble Sheet Cake

Ingredients

• 1 tablespoon double-acting baking powder 
• 1 cup butter softened
• 2 large eggs 
• 2.5 cups flour all-purpose
• 1 cup half-and-half 
• 0.5 teaspoon salt 
• 1.8 cups sugar divided
• 0.3 cup cocoa unsweetened
• 2 teaspoons vanilla extract 
• 3 tablespoons water hot

Equipment

• bowl
• frying pan
• oven
• knife
• wire rack
• stand mixer
• spatula

Directions

1. Preheat oven to 32
2. Beat butter and 1 1/2 cups sugar at medium speed with a heavy-duty electric stand mixer 4 to 5 minutes or until creamy.
3. Add eggs, 1 at a time, beating just until blended after each addition. Beat in vanilla extract.
4. Sift together flour, baking powder, and salt.
5. Add to butter mixture alternately with half-and-half, beginning and ending with flour mixture. Beat at low speed just until blended after each addition, stopping to scrape bowl as needed.
6. Spoon 1 1/4 cups batter into a 2-qt. bowl, and stir in cocoa, 3 Tbsp. hot water, and remaining 1/4 cup sugar until well blended.
7. Spread remaining vanilla batter into a greased and floured 15- x 10-inch jelly-roll pan. Spoon chocolate batter onto vanilla batter in pan; gently swirl with a knife or small spatula.
8. Bake at 325 for 23 to 28 minutes or until a wooden pick inserted in center comes out clean. Cool completely in pan on a wire rack (about 1 hour).
9. Spread top of cake with Mocha Frosting.