Mix together the pretzels, 3 tablespoons sugar and butter. Press into the bottom of a 9x13 inch casserole dish. Bake at 400 degrees F for 10 minutes. Remove from oven and allow to cool completely.
Mix together the cream cheese and 1 cup sugar. Fold in the whipped topping. Spread evenly over the pretzel crumbs. Chill in the fridge.
In a large bowl, mix the strawberry jello with the boiling water until it has dissolved. Stir in the sliced strawberries and let chill in the fridge until it has partially set, about 2 to 3 hours.
Once the strawberry jello mixture has set, spread evenly over the cream cheese mixture, then refrigerate until it has fully set.
Notes
Calories are automatically generated. For best results calculate based on your exact ingredients.