Blueberry Buckle

Cream together ¾ cup of sugar with ½ cup butter and one egg. Mix 2 cups of flour with 2 tsp. of baking powder and add to creamed mixture with ½ cup of milk. Gently fold in 2 cups of blueberries. Pour batter into 9 X 11" greased pan. Make a crumb mixture of 1 cup of flour, 1/3 cup of sugar and ¼ cup of butter; sprinkle crumbs over batter. Bake in 375-degree oven for 45 to 50 minutes.