Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
Prepare the Crust: In a mixing bowl, combine the crushed pretzel sticks with the melted butter. Mix until the pretzels are completely coated in butter. Transfer this mixture into a 9x13-inch baking dish, pressing it firmly into the bottom to create a uniform crust. Bake for approximately 10 minutes or until the crust is lightly golden. Once done, remove from the oven and let it cool completely.
Make the Cream Cheese Layer: In a separate bowl, use an electric mixer on medium speed to beat the softened cream cheese until smooth and creamy. Gradually incorporate the granulated sugar, continuing to mix until well combined. Gently fold in the whipped topping until everything is seamlessly integrated.
Spread the Cream Cheese Mixture: Once the pretzel crust is completely cool, evenly spread the cream cheese mixture on top, ensuring you reach all corners of the crust for a uniform layer.
Prepare the Fruit Layer: In another bowl, combine the drained mandarin oranges, crushed pineapple, and mini marshmallows. Gently mix the fruits together, then spoon this delightful fruity mixture evenly over the cream cheese layer.
Make the Gelatin Topping: In a separate bowl, prepare the gelatin according to the package instructions, using 1 cup of boiling water followed by 1 cup of cold water. Allow the mixture to cool slightly before carefully pouring it over the fruit layer.
Chill: Cover the dish tightly with plastic wrap and place it in the refrigerator. Let it chill for at least 4 hours or, for best results, overnight, allowing the layers to set nicely.
Serve: When ready to indulge, cut the dessert into squares, serve chilled, and enjoy the delightful blend of sweet and salty flavors!
Notes
For an appealing presentation, consider serving the squares on a decorative platter, garnished with fresh mint leaves or additional mandarin orange slices.