Cathy's Banana Bread

Preheat oven to 350 degrees F (175 degrees C).

Grease and flour one 9x13 inch pan, or two 7x3 inch loaf pans.

Combine banana and sour cream.

In a large bowl, cream together the margarine and sugar until smooth.

Beat in the eggs one at a time, then stir in the vanilla and banana mixture.

Combine the flour, baking soda, baking powder and salt; stir into the banana mixture.

Spread the batter evenly into the prepared pan or pans.

Bake for 50 minutes in the preheated oven, or until a toothpick inserted into the center of the bread comes out clean.