Heat oven to 350°F. Grease and flour two 9-inch round baking pans.
In a large bowl, sift together sugar, flour, cocoa, baking powder, baking soda and salt.
2 cups sugar, 1 3/4 cups all-purpose flour, 3/4 cup cocoa, 1 1/2 tsps baking powder, 1 1/2 tsps baking soda, 1 tsp salt
Add eggs, milk, oil and vanilla; beat on medium speed of mixer 2 minutes.
2 eggs, 1 cup milk, 1/2 cup vegetable oil, 2 tsps vanilla extract
Stir in boiling water (batter will be thin). Pour batter into prepared pans.
1 cup boiling water
Bake 30 to 35 minutes or until wooden pick inserted in center comes out clean.
Cool 10 minutes; remove from pans to wire racks. Cool completely before frosting.
homemade chocolate frosting