Crumble Top Banana Bread

INGREDIENTS

egg

1 cup

sugar

1/2 cup

unsalted butter ((room temp))

1 tsp

vanilla

1/2 cup

buttermilk or sour cream

overripe bananas ((mashed))

2 cups

all purpose flour

1/2 tsp

salt

1/2 tsp

baking soda

1 tsp

cinnamon

1/2 cup

powdered sugar

1/2 cup

all purpose flour

4 tbsp

unsalted butter, melted

1/2 tsp

cinnamon

salt