Preheat the stove to 375 degrees F (190 degrees C). Oil a 9×13 inch dish. In a medium bowl, blend together 1 container sugar, 3 mugs flour, and heating powder. Blend in salt and lemon get-up-and-go. Utilize a fork or baked good shaper to mix in the spread and egg. Batter will be brittle. Praise half of batter into the readied dish.

In another bowl, blend together the sugar, cornstarch and lemon juice. Delicately blend in the blueberries. Sprinkle the blueberry blend equitably finished the covering. Disintegrate remaining batter over the berry layer.

Prepare in preheated broiler for 45 minutes, or until the point when top is marginally dark colored. (This took an additional 10 to 15 minutes in my broiler.) Cool totally before cutting into squares.