Cocoa Mayonnaise Cake

1-3/4 cups all-purpose flour
1 cup sugar
1/3 cup HERSHEY'S Cocoa
1-1/2 teaspoons baking powder
1-1/2 teaspoons baking soda
1/8 teaspoon salt
1 cup mayonnaise
1 cup water
2 teaspoons vanilla extract

Heat oven to 350° F. Grease and flour 13x9x2-inch baking pan or 10-inch tube pan.
Stir together flour, sugar, cocoa, baking powder, baking soda and salt in large bowl. Add mayonnaise, water and vanilla; beat on medium speed of electric mixer 3 minutes. Pour batter into prepared pan. Bake 40 minutes for rectangular pan or 45 to 50 minutes for tube pan or until wooden pick inserted in center comes out clean. Cool 10 minutes; remove from pan. Cool completely; frost as desired.
Yield: 12 to 15 servings.