Preheat oven to 350°. Grease bottom and sides of 9x13 pan and set aside. In a medium sized bowl combine 2 cups of flour, baking powder, and salt.

In a large bowl beat shortening on medium speed for 30 seconds with and electric mixer. Add the 3/4 cup sugar. Beat on medium speed till light and fluffy. Add egg and beat well. Add dry mixture and milk alternatively to wet mixture, beat until smooth.

Spoon batter into prepared pan and sprinkle blueberries on top. Combine 1/2 cup flour, 1/2 cup sugar, and cinnamon. Cut in butter until mixture resembles coarse crumbs. Sprinkle over blueberries. Bake on 350° for 50-60 minutes or until golden.