PREHEAT oven to 350°F. Grease 13×9-inch baking pan.
For Crust
BEAT flour, butter and brown sugar in small mixer bowl until crumbly. Press into prepared baking pan.
BAKE for 12 to 15 minutes or until lightly browned.
For Filling
BEAT eggs, corn syrup, granulated sugar, butter and vanilla extract in medium bowl with wire whisk. Stir in chunks and nuts. Pour evenly over baked crust.
BAKE for 25 to 30 minutes or until set. Cool completely in pan on wire rack. Cut into bars.