Preheat oven to 400.
Mix pretzels, sugar, and butter together in a bowl and pat down in a greased 9 x 13 dish.
Bake for 8 minutes, cool completely.
Beat together cool whip, powder sugar, and cream cheese. Spread over cooled pretzel layer.
In a bowl mix strawberry jello according to the package instructions. Put in refrigerator to thicken.
Spread over cream cheese layer.
Refrigerate until set.