Preheat oven to 400.
Mix pretzels, pecans, brown sugar and melted butter in a bowl. Spread onto an ungreased baking sheet and bake for about 7 minutes or until bubbly. Set aside to cool. Break apart into small pieces once completely cool.
Add cream cheese, white sugar and vanilla in a mixing bowl. Beat until mixed well. Add in whipped topping and beat until combined.
Fold berries and pretzels into cream mixture. Serve immediately.
Store in the refrigerator, covered.