Created by KittenCal on December 3, 2011
Step 1: Preheat oven to 350 degrees F.
Step 2: Grease a 13 x 9-inch baking pan.
Step 3: In a bowl combine the Bisquick baking mix with 1 cup brown sugar and 1 1/2 teaspoons cinnamon. Add in mashed banana, milk, egg and oil; mix to combine. Transfer to prepared pan.
Step 4: In a small bowl combine all topping mixture until small clumps form, then sprinkle over the top of the batter.
Step 5: Bake 30 minutes or until golden brown and the cake tests done. Cool then slice from the pan.