Preheat oven to 350.
Cream the shortening & sugar.
Add bananas, eggs and vanilla.
Mix the dry ingredients separately and add to the wet mixture.
Spoon into lined or greased muffin tins, then add Streusel Topping**
Bake in muffin tins at 350 15-20 minutes, or for 45 minutes - 1 hour in loaf pans (for bread).