Creating the Blackberry Pretzel Dessert is a breeze if you follow these straightforward steps:

1. Prepare the Pretzel Crust: In a mixing bowl, combine crushed pretzel sticks and granulated sugar. Pour in melted butter and mix well until evenly combined.
2. Press into Pan: Firmly press the pretzel mixture into the bottom of a 9×13 inch baking dish. Bake in a preheated oven at 350°F (175°C) for about 10 minutes. Remove from the oven and let it cool completely.
3. Make Cream Cheese Layer: In a new bowl, beat softened cream cheese and powdered sugar until smooth. Gently fold in whipped topping until well combined.
4. Spread over Crust: Once the pretzel crust has cooled, spread the cream cheese mixture evenly over the crust.
5. Prepare the Blackberry Topping: In another bowl, mix fresh blackberries, blackberry preserves, and lemon juice together until combined.
6. Layer the Blackberries: Spoon the blackberry mixture on top of the cream cheese layer, spreading it evenly.
7. Chill: Cover the dish with plastic wrap and refrigerate for at least 4 hours to allow the dessert to set properly.
8. Serve: Once chilled, cut into squares and garnish with additional blackberries, if desired.

By following these steps carefully, you are guaranteed to create an incredible Blackberry Pretzel Dessert that will impress everyone!