3 c. flour
2 c. sugar
2 tsp. baking powder
1 c. cooking oil
4 eggs
1/2 c. orange juice
2 1/2 tsp. vanilla

Place all of above ingredients in large bowl mix well with wooden spoon. Place half the batter in greased and floured 9 x 13 inch pan. Coat 2 cups blueberries with 5 tablespoons sugar. Spread blueberries over batter evenly. Top with remaining batter. Bake at 350 degrees for 45 to 50 minutes. Sprinkle with powdered sugar.