Wash and thoroughly dry the grapes, ensuring all stems are removed.
2 pounds seedless grapes
In a large mixing bowl, beat the softened cream cheese until smooth. Add the sour cream, granulated sugar, and vanilla extract, mixing until well combined and creamy.
8 ounces block-style cream cheese, 8 ounces sour cream, ½ cup granulated sugar, 1 teaspoon vanilla extract
Gently fold the grapes into the cream cheese mixture, making sure they are evenly coated.
Lightly toast the chopped pecans on the stove over low-medium heat for a few minutes until fragrant.
½ cup chopped pecans
In a separate bowl, combine the toasted chopped pecans, light brown sugar, and crushed pretzels. Set aside.
¼ cup light brown sugar, ½ cup crushed pretzels
Cover the salad and refrigerate it for at least one hour to allow the flavors to meld together.
Sprinkle the pecan topping evenly over the grape salad just prior to serving.
Serve chilled.