Combine blueberries, sugar, lemon juice, and the cornstarch into in small pot. Heat on medium and stir well.
Preheat oven to 325°. Combine finely crushed graham crackers, salt, and brown sugar.
Melt the 4 tablespoon of butter and mix in the graham mixture.
Press graham cracker crust into the bottom of the pan. Bake the crust in the oven for 15 minutes.
FOR THE FULL RECIPE