Raspberry Pretzel Jello Dessert

3/4 cup butter, melted (1-1/2 cubes)
3 Tbl. sugar
2-1/2 cups coarsely crushed or chopped pretzels
1 cup sugar
1 8-oz. pkg cream cheese
1 8-oz. pkg. whipped topping
2 6-oz. boxes raspberry jello
3-1/4 cups water, divided
15-20 oz. frozen raspberries

Pre-heat oven to 350 degrees. Add 3 Tbl. sugar and crushed pretzels to melted butter.  Stir until coated and press into the bottom of a 9x13 pan.  Bake for 10 min.  Cool.  Cream 1 cup sugar and cream cheese.  Fold in whipped topping.  Spread over cooled crust.  Dissolve jello in 1-1/2 cups boiling water. Add 1-3/4 cups ice-cold water and stir.  Add raspberries.  Cool for 30 min. or until just before jello starts to set.  Pour over cream cheese layer and chill for at least 4 hours or overnight.