2 c crushed pretzels, 3/4 c butter, melted 3 tabs sugar,1 (8 oz) pkg cream cheese, softened ,1 c sugar,1 (8 ounce) whipped topping, thawed,2 (3 oz) pkg strawberry Jello. 2 c boiling water,2 1/2 c frozen strawberries. Preheat oven to 400 degrees. Stir together crushed pretzels, melted butter and sugar; mix well,press into bottom of 9 x 13-in dish. Bake 8-10 minutes, until set; cool. Mix cream cheese and sugar. Fold in whipped topping. Spread onto cooled crust.