Nonstick cooking spray
1 pound peanut butter cookies
6 tablespoons unsalted butter, melted
1/2 teaspoon kosher salt
One 1/4-ounce package unflavored powdered gelatin
1 pound cream cheese, at room temperature
1 cup confectioners' sugar, sifted
1/2 cup peanut butter powder, sifted
1/2 cup sour cream, at room temperature
2 tablespoons fresh lemon juice
2 teaspoons pure vanilla extract
1/4 teaspoon kosher salt
One 1/4-ounce package unflavored powdered gelatin
One 3-ounce box strawberry gelatin
1 cup strawberry jelly