Preheat oven to 350 degrees.
For the crust, mix pretzels, 3 Tbsps sugar and butter together. Press into the bottom of a 13 x 9-inch baking dish. Bake 10 minutes. Set aside to cool.
In a small bowl, mix gelatin and boiling water together. Set aside and allow to cool slightly.
In a mixing bowl, beat together cream cheese and 1 cup sugar until smooth. Fold in whipped topping until combined. Spread over cooled crust. Refrigerate until chilled.
Add sliced strawberries to cooled gelatin and stir to combine. Pour over cream cheese mixture.
Cover and refrigerate at least 3 hours or until set. I usually make mine the night before I will be serving it.
Cut into slices to serve.