Step 1

Heat oven to 350°F. Lightly spray 9x5-inch loaf pan with cooking spray.

Step 2

In small bowl, stir together Streusel ingredients except butter. Pinch pieces of butter into flour mixture until crumbly and looks like wet sand. Refrigerate.

Step 3

In large bowl, mix mashed bananas, melted and cooled butter, 1 cup sugar, the egg, milk and vanilla to combine. In another small bowl, stir together 1 1/2 cups flour, the baking powder, salt and 1/2 teaspoon cinnamon. Fold banana mixture into flour mixture just until combined, taking care not to over mix. Spread batter in loaf pan, smoothing top. Sprinkle streusel evenly over top.

Step 4

Bake in center of oven about 1 hour or until toothpick inserted in center comes out clean. Cool in pan on cooling rack 5 minutes. Remove from pan; cool at least 15 minutes before slicing.