Adapted from AllRecipes.com
Yield: depends on how small you cut them...
1 cup white sugar
1 teaspoon baking powder
3 cups all-purpose flour
1 cup cold butter (2 sticks)
1/4 teaspoon salt
Juice of one lemon (3 Tablespoons)
4 cups fresh blueberries (2 pints)
1/2 cup white sugar
4 teaspoons cornstarch
Preheat the oven to 375 degrees F (190 degrees C). Grease a 9×13 inch pan.
In a medium bowl, stir together 1 cup sugar, 3 cups flour, and baking powder. Mix in salt. Use a fork or pastry cutter to blend in the shortening and egg. Dough will be crumbly. Pat half of dough into the prepared pan.
In another bowl, stir together the sugar, cornstarch and lemon juice. Gently mix in the blueberries. Sprinkle the blueberry mixture evenly over the crust. Crumble remaining dough over the berry layer.4. Bake in preheated oven for 45 minutes, or until top is slightly brown. Cool completely (and chill if possible) before cutting into squares. (Store in the refrigerator.)