2 cups pretzels (broken into pieces) 1/2 cup Butter or margarine, melted 1 large box (6 oz) raspberry Jell-o 1 cup Sugar 2 - 3 cups frozen raspberries (you can also use fresh) 1 (8 oz) container Cool Whip whipped topping 3 Tablespoons Sugar 2 cups boiling water 1 (8 oz) package cream cheese First Layer - combine broken pretzels, butter and sugar. Press in 9 x 13 pan and bake at 350 degrees for 7 minutes. Cool completely. Second Layer - Beat 1 cup sugar and cream cheese until smooth. Fold in Cool Whip. Spread over pretzel layer. Third Layer - Mix Jello and boiling water. Add frozen raspberries. Cool and set slightly. Pour over cream cheese layer. Refrigerate until firm.