Banana Sour Cream Coffee Cake
alt.cooking-chien/Mary the Coffee Queen (2000)

This is a good recipe to use up over-ripe bananas...

Cake
1/4 cup butter or margarine
1/3 cup sugar
2-3 extremely ripe bananas mashed
1/4 cup sour cream
1 egg
1 Tbsp grated orange peel
1 tsp vanilla1
5 cups flour
1 Tbsp baking powder
1/2 tsp baking soda
1/4 tsp salt
1/4 tsp nutmeg
1/4 cup milk

Struesel Topping
2 Tbsp cold butter
1/2 cup brown sugar
2 Tbsp flour
2 tsp cinnamon
1/2 cup chopped pecans or walnuts (optional)
1/3 cup shredded coconut (optional)

Cake:
Cream butter and sugar, then blend in bananas, sour cream, egg, orange peel, and vanilla. In a separate bowl, combine remaining dry ingredients. Add to banana mixture alternately with milk, stirring after each addition until just combined. Spread in a greased 8 or 9-inch square pan. Sprinkle with streusel topping, coconut, and pecans. Bake, 375 F, 35-40 minutes.

Topping:
Mix sugar, flour, and cinnamon in a small bowl. Cut in butter until coarse crumbly texture is achieved.