Chocolate Chunk Butter Pecan Bars

Ingredients (8)

• 1 cup packed light brown sugar
• 1 cup (2 sticks) salted butter,
• 1 large egg yolk
• 1 teaspoon vanilla extract
• 2 cups all purpose flour
• 1/4 teaspoon salt
• 10 ounces Hershey's milk chocolate chunks
• 1/2 cup coarsely chopped pecans