Place the pretzels into a gallon size zip-top bag and crush the pretzels into coarse crumbs using a rolling pin. You can also pulse the pretzels in a food processor, just be careful not over-process them as you want there to be varying textures.
3 cups tiny pretzel twists
Place the pretzels into a mixing bowl and stir in the sugar and melted butter. Transfer the pretzel mixture into a 9×13-inch glass baking dish and gently press the mixture into the bottom of the baking dish to form an even crust layer. Bake the crust in preheated oven for 10 minutes. Remove pan from oven and move to a wire rack to cool completely.
¼ cup granulated sugar, 8 tablespoons unsalted butter
In a large mixing bowl with an electric mixer, beat the cream cheese, sugar and vanilla on medium speed for about 5 minutes, scraping down the sides of the bowl as needed. Use a rubber spatula to fold in the whipped topping into the cream cheese mixture. Spread evenly over the cooled crust, taking care to spread the filling from edge to edge of the pan so the topping doesn’t seep into the crust layer. Cover and refrigerate for 1 hour.
16 ounces cream cheese, 1 cup granulated sugar, 1 teaspoon pure vanilla extract, 8 ounces frozen whipped topping
While the cream cheese layer chills, whisk together the Jell-o and boiling water for 2 minutes or until the Jell-o has fully dissolved. Stir in the reserved 1 cup of pineapple juice and drained pineapple tidbits. Place this mixture in the refrigerator for 1 hour to cool.
2 (3-ounce) packages Island Pineapple Jell-o, 1 cup boiling water, 2 (20-ounce) cans pineapple tidbits in juice
After the cream cheese layer and the Jell-o mixture have both chilled for 1 hour, pour the Jell-o mixture directly onto the cream cheese filling layer and spread to form an even layer.
Cover and refrigerate for at least 6 hours.
Notes
When whisking the jell-o with the boiling water, the top will get frothy/bubbly. If you want a super smooth finish on your pineapple topping, simply use a spoon to remove some of the froth (though it won’t affect the taste!).
I have not tried this recipe using whipped cream instead of whipped topping, so I cannot attest to the outcome.
Storage
Store covered in the refrigerator for up to 3 days.