Preheat oven to 350°F (175°C). In a bowl, mix crushed pretzels, melted butter, and 1/4 cup sugar. Press into an ungreased baking dish and bake for 10 minutes until golden. Let cool.

Beat softened cream cheese with the remaining sugar until smooth. Fold in Cool Whip and spread over the cooled pretzel crust.

Dissolve strawberry gelatin in boiling water according to package instructions. Allow cooling slightly before mixing in sliced strawberries.

Pour the strawberry mixture over the cream cheese layer and spread evenly.

Cover with plastic wrap and refrigerate for at least four hours or until set. Slice into squares to serve.