Prepare the Strawberry Topping:
Toss the sliced strawberries with sugar in a large bowl and set aside.
Dissolve the gelatin in the boiling water.
Pour the water and gelatin mixture over the strawberries and set in the fridge to set partially for an hour and a half.
For the Crust-
Preheat oven to 350ºF.
Combine the pretzels, butter, and sugar in a bowl.
Grease a 13×9'' baking dish with cooking spray.
Spread the pretzel mixture in the pan using your hands to press the crust evenly in the bottom of the baking dish.
Bake for 10 minutes and set aside to cool.
The Cream Filling-
Combine in the mixer the Cool Whip, cream cheese, and sugar in a bowl and mix until smooth.
For the Pretzel Layer-
Pour the cream mixture over the cooled pretzel crust and spread gently. Use a spoon to spread the partially set strawberry and jello mixture over the cream filling.
Chill the bars in the fridge for at least 6 hours before serving.
Cut into slices and Enjoy!