1 cup sugar
1 stick (1/2 cup) butter, softened 
1 egg 
1 tsp. vanilla 
1/2 cup eggnog
2 overripe bananas, mashed 
2 cups all-purpose flour
1/2 tsp. salt 
1/2 tsp. baking powder 
1 tsp. baking soda 
1 tsp. cinnamon 
Crumb Topping:
1/2 cup powdered sugar
1/2 cup flour
4 Tbsp. butter, melted 
1/2 tsp. cinnamon 
pinch of salt