Good-Cooking - Chocolate-Sour Cream Pound Cake

Ingredients

• 1 cup butter or margarine, melted
• 2 cups granulated sugar
• 1 cup firmly packed brown sugar
• 6 large eggs
• 2 1/2 cups all-purpose flour
• 1/4 teaspoon baking soda
• 1/2 cup cocoa
• 1 (8 ounce) ctn. sour cream
• 2 teaspoons vanilla extract