Banana Blueberry Bread

1 cup sugar 1 stick butter, softened 2 eggs 4 ripe bananas 1/4 cup buttermilk 1 tsp cinnamon 2 cups flour 1 tsp baking powder 1 tsp baking soda 1 tsp salt 1-2 cups blueberries Streusel Topping: 1 stick butter 1/2 cup brown sugar 1 cup flour 1/2 tsp cinnamon pinch salt Heat oven to 325. Grease 2 loaf pans. Cream butter and sugar, add eggs one at a time, add bananas, then all other ingredients for bread, fold in blueberries gently. Blend topping with a fork, then sprinkle over tops of bread, being very generous! Bake 1 hour- 1 hour 10 mins, Check with toothpick to be sure middle is done. Cool in pans 20 mins before removing. Sooooo addictive and delicious!!!