Topping:

1/4 c. flour
1/3 c. sugar
1 tbsp. butter
3/4 tsp. cinnamon

Combine the flour, sugar, butter and cinnamon. Set aside.

Cake:

2/3 c. sugar
1/3 c. vegetable oil
1/2 c. sweet milk
1 egg, beaten
1 c. blueberries, drained

Combine all ingredients, except blueberries; mixing well. Fold in blueberries. Pour into a greased 9 x 9 x 2 inch baking pan. Sprinkle topping on batter; bake in a 375°F oven for 20 to 25 minutes or until cake tests done.

Glaze:

1 c. powdered sugar
4 tbsp. milk
1/2 tsp. vanilla

Mix above ingredients and drizzle on cake while still warm.