2 c. graham crackers
1/2 c. melted butter
2 c. powdered sugar
1 (8 oz.) pkg. cream cheese
2 (8 oz.) boxes Cool Whip
1 lg. can blueberry pie filling

Crush graham crackers. Add butter and 4 tablespoons powdered sugar; mix well. Spread in bottom of pan. Cream remaining powdered sugar and cream cheese. Fold in 1 (8 ounce) box Cool Whip to cream mixture.