Coffee Cake

Ingredients
2 cups all-purpose flour
1 1/2 cups white sugar
2 teaspoons baking powder
1 teaspoon salt
2/3 cup margarine
2 eggs, beaten
2/3 cup milk
1 cup blueberries

Directions
1.Preheat oven to 350 degrees F. Grease and flour a 9 inch square pan.
2.In a large bowl, combine flour, sugar, baking powder and salt. Cut in margarine until mixture resembles coarse crumbs. Set aside 3/4 cup of crumb mixture, to be used as a topping for the cake. Mix eggs and milk together and then blend into remaining mixture in bowl.
3.Spread batter into prepared pan. Sprinkle blueberries evenly over the top. Sprinkle reserved crumb mixture over fruit.
4.Pour batter into prepared pan. Bake in the preheated oven for 25 to 30 minutes, or until a toothpick inserted into the center of the cake comes out clean.