CAKE:

1 (7 oz.) pkg. wild blueberry muffin mix (Jiffy)
1 (7 oz.) pkg. banana nut muffin mix (Jiffy)
1 egg
1/2 c. milk

STREUSEL TOPPING:

1/2 c. brown sugar, packed
1/3 c. all-purpose flour
1/4 c. (1/2 stick) butter
1/2 tsp. cinnamon

CAKE: Heat oven to 400 degrees. Grease 9x9x2 inch baking pan with shortening. Prepare the muffin mix as directed on package except, after mixing, pour the batter into the greased pan. Sprinkle with topping. Bake in 400 degree oven 20 to 25 minutes or until wooden pick inserted in the center comes out clean. Serve warm.

TOPPING: Mix 1/2 cup brown sugar, 1/3 cup flour, 1/4 cup butter and 1/2 teaspoon cinnamon in small bowl with fork until crumbly.