Preheat your oven to 400°F (200°C). Make sure it’s fully heated, so the crust turns out perfectly. Spray a 9×13-inch baking dish with nonstick spray to prevent sticking, and set it aside.
In a medium-sized bowl, mix together the melted butter, crushed pretzels, and 3 tablespoons of Stevia. Make sure everything is well combined, and you’ll notice the mixture starting to clump together. This will create a sturdy base for your dessert.
Pour the pretzel mixture into the prepared baking dish. Use your hands or a spatula to press it down firmly, creating an even layer that covers the bottom of the dish. The crust should be thin but packed well to hold the layers above.
Place the baking dish in the preheated oven and bake the crust for about 7 to 8 minutes. You want it to be golden brown but not overly crispy. Once baked, remove it from the oven and let it cool completely.
While the crust is cooling, it’s time to prepare the cream cheese layer. In a large mixing bowl, use a hand mixer or stand mixer with the paddle attachment to beat together the cream cheese and ¾ cup of Stevia. Mix until the cream cheese is smooth and creamy. You should be able to achieve a fluffy consistency.
Next, stir in the sugar-free whipped topping into the cream cheese mixture. Gently fold it until it's fully incorporated, and you have a smooth, light mixture that will layer beautifully over your pretzel crust.
Pour the cream cheese mixture over the cooled pretzel crust, using a spoon or an offset spatula to spread it evenly. Make sure to create a smooth, even layer; this will be the base for the fruity topping.
Place the baking dish in the refrigerator to chill for about 30 to 60 minutes. This will allow the cream cheese layer to set slightly before adding the gelatin topping.
Now, let’s prepare the gelatin layer! In a small saucepan, bring the water to a boil. Once boiling, remove it from the heat and stir in the gelatin mix. Let it cool for about 10 minutes, which will help prevent it from melting the cream cheese layer when added.
After the gelatin has cooled, stir in the frozen strawberries and crushed pineapple. The combination of these fruits will add a refreshing burst of flavor to the topping.
Carefully pour the strawberry and pineapple mixture over the cream cheese layer. Ensure it's spread evenly so that each slice will have plenty of fruity goodness.
Return the baking dish to the refrigerator and allow the salad to chill for 6 to 8 hours, or until the gelatin is fully set. Patience is key here!
Once it’s set, slice the Sugar Free Pretzel Salad into squares and serve with a dollop of sugar-free whipped topping and sliced strawberries for garnish. Enjoy!