Preheat your oven to 350°F. Toss broken pretzel pieces with melted butter and salt in a small bowl until coated. Spread them on a baking sheet and toast for 5 to 7 minutes, stirring halfway through. You'll hear it sizzle—that's exactly what you want. Let the pretzels cool completely before using them.
While pretzels toast, beat softened cream cheese and sugar together in a medium bowl until smooth and fluffy. This takes about 2 minutes with an electric mixer. Gently fold in the thawed whipped topping and vanilla extract until combined. Don't overmix or you'll lose the light, airy texture.
In a small saucepan, combine strawberry jam, water, and lemon juice over low heat. Stir constantly for about 3 minutes until everything's blended and warm. The jam sauce should be smooth and pourable—if it's too thick, add another tablespoon of water. Let it cool for 5 minutes.
Grab a 9-by-13-inch baking dish and spread the cooled pretzel mixture evenly across the bottom. You want a solid layer that'll support the cream cheese filling without crumbling. Press it down gently with your hands to pack it together (trust me on this).
Spread the cream cheese mixture over the pretzel layer in an even, generous layer. I use an offset spatula to make this easier, but a regular knife works fine too. Don't press it down hard—just let it sit naturally on top of those crunchy pretzels.
Pour the cooled jam sauce over the cream cheese layer, spreading it to cover most of the surface. Here's my tip: work quickly but gently so you don't accidentally drag the jam down into the cream cheese layer. Mine always sticks a little to the edges and that's fine.
Top the entire strawberry pretzel salad recipe with fresh sliced strawberries, toasted almonds, and chopped mint leaves. Refrigerate for at least 2 hours before serving—this gives everything time to set and the flavors to meld together. The kitchen smells amazing while it chills!