1 cup margarine, softened
2 cups white sugar
6 bananas, mashed
2 teaspoons vanilla extract
3 cups all-purpose flour
2 teaspoons baking soda
1/4 cup unsweetened cocoa powder
1 cup lite sour cream
1 cup semisweet chocolate chips
Preheat oven to 175 degrees C. Lightly grease two 9x5 inch loaf pans.
In a large bowl, cream together margarine, sugar and eggs. Stir in bananas and vanilla. Sift in flour, baking soda and cocoa; mix well. Blend in sour cream and chocolate chips. Pour batter into prepared pans.
Bake in preheated oven for 60 minutes, or until a toothpick inserted into center of a loaf comes out clean.