Preheat the oven to 400 degrees Fahrenheit. Brush the bottom and slightly up the sides of a 13x9 inch baking pan with some of the melted butter.

Pulse the pretzels and sugar in a food processor, about 15 pulses, until coarsely chopped. Pour in the melted butter and process for another 10 pulses, until the mixture is combined. There should still be small pieces of pretzel; don't obliterate the pretzels into crumbs.

Press the pretzel mixture into the bottom of the prepared baking sheet. Bake in the preheated oven for about 10 minutes. Cool for about 20 minutes.

Meanwhile, using a whisk attachment on a standing mixer, or using a hand mixer, mix the softened cream cheese with the sugar.

Gradually pour in the chilled heavy cream, increase the speed to high and whisk until there are soft peaks. (If you're nervous about this step and don't think that the heavy cream will thicken, mix the cream cheese and sugar and then whisk the heavy cream separately until soft peaks form and then fold the whipped cream into the cream cheese mixture. I've NEVER had any issues having the heavy cream whip up into a thick and voluminous texture if it's added to whipped cream cheese, so I always use this method.)

Pour the cream cheese mixture into the cooled crust, and spread it out into an even layer. Place in the refrigerator to set for about 30 minutes.

While the cream cheese layer is chilling, puree 2 lbs of the strawberries in a food processor. Sprinkle the gelatin over the cold water in a large bowl and set aside for about 5 minutes, so that the gelatin softens.

Slice the remaining pound of strawberries and set aside.

Press the pureed berries through a fine mesh sieve. Pour the strained berries into a small saucepan, add the sugar and salt. Bring the berries to just about a boiling point, when bubbles start to break at the surface, about 5 minutes.

Pour the hot strawberry mixture over the softened gelatin and whisk until all the gelatin is dissolved and evenly dispersed in the strawberry puree.

Add the sliced berries to the pureed berries. Cool for about 30 minutes.

Gently pour the strawberry mixture over the cheesecake layer and even it out into a smooth layer.

Place in the refrigerator to set, about 4 hours. This is a wonderful recipe to make ahead of time, so take advantage of it and prepare it the night before you plan to serve it.