Prepare the Crust: Begin by preheating your oven to 350°F (175°C). In a medium mixing bowl, blend together the crushed pretzel sticks, melted butter, and granulated sugar until the pretzels are well coated. Firmly press this mixture into the bottom of a 9x13-inch baking dish, ensuring an even layer. Bake in the preheated oven for 10 minutes, then remove and allow to cool completely on a wire rack.
Make the Cream Cheese Layer: In a large mixing bowl, use an electric mixer to beat the softened cream cheese until it reaches a smooth consistency. Gradually add the powdered sugar while continuing to mix until fully combined. Gently fold in the whipped topping until the mixture is smooth and well incorporated. Carefully spread this luscious cream cheese mixture evenly over the cooled pretzel crust.
Prepare the Strawberry Layer: In a separate bowl, dissolve the strawberry gelatin mix in 2 cups of boiling water, stirring until it is thoroughly dissolved. Allow the mixture to cool for about 10 minutes. Once cooled, stir in 2 cups of cold water. Gently add the sliced strawberries to the gelatin mixture, ensuring they are well distributed.
Combine Layers: After the gelatin mixture has thickened slightly but hasn't fully set, carefully pour it over the cream cheese layer in the baking dish. Use a spatula to spread it evenly, ensuring complete coverage.
Chill: Cover the dish tightly with plastic wrap and place it in the refrigerator. Allow it to chill for at least 4 hours or, for best results, overnight until everything is fully set.
Serve: When ready to serve, cut the dessert into squares and present chilled. Each slice will reveal the delightful layers of creamy filling, juicy strawberries, and the salty pretzel crust, creating a beautiful visual display.