To prepared the Crumb Topping:
- Combine cinnamon, brown sugar, and flour.
- Cut in butter until crumbly in texture.
To Prepare Banana Bread:
- Preheat oven to 350*
- Spray two 8 x 4 pans with non-stick spray, butter, or oil of choice. (I also make these in the smaller loaf pans and it makes approximately five loaves.
- In a mixer, cream together butter and sugars until light and fluffy.
- Add in eggs, vanilla extract, and sour cream (or Greek yogurt)
- Add in mashed bananas until combined.
- Combine dry ingredients in a separate bowl.
- Add dry ingredients until incorporated.
- Divide batter between two prepared pans.
- Sprinkle Crumb topping generously over both pans.
- Bake at 350* for 35-40 minutes until tester comes out clean.