Strawberry Pretzel Salad

Name: Strawberry Pretzel Salad
Prep time: 4 h 20 min
Cook time: 6 min
Total time: 4 h 26 min
Cuisine: American
Ingredients: 3 cups pretzels; 1 cup roughly chopped walnuts; 6 Tbsp. unsalted butter, melted; 1 Tbsp. sugar; 8 oz. cream cheese, softened; 1 cup white granulated sugar; 1 scoop collagen (optional); 1 tsp. vanilla extract; 8 oz. Cool Whip, divided; 6 oz. strawberry gelatin; 2 cups boiling water; 1 and ½ cups cold filtered water; 1 and ½ cup thinly sliced fresh strawberries