Preheat and Prep: Preheat your oven to 400 degrees F. Line a baking sheet with parchment paper and grease it lightly.

Mix the Pretzel Coating: In a medium-sized bowl, add the roughly crushed pretzel pieces and the brown sugar, mixing them together. Pour the melted butter over the dry ingredients and mix until everything is well combined and evenly coated.

Bake the Crunch: Spread the sugary pretzel mixture on the lined baking sheet and bake for 8-10 minutes, or until bubbling. Set the pan aside to fully cool before breaking the caramelized sheet into small pieces.

Make the Cream Base: In a large bowl, mix together the softened cream cheese, granulated sugar, and vanilla extract. Once perfectly smooth, fold in the Cool Whip gently until just combined. Gently mix in the drained pineapple chunks, then cover the bowl and refrigerate until ready to serve.

Serve: Top the chilled cream mixture with additional pineapple if desired and the cooled pretzel crunch. Mix the crunch in right before serving to maintain maximum texture.