Move oven rack to middle position, and preheat oven to 350 degrees F. Spray a 12-cup tube or bundt pan with nonstick cooking spray; set aside.
Open tubs of Pillsbury™ Grands!®. Separate each tube into 5 rolls and set aside icing. Cut each roll into quarters; set aside.
In a small bowl add egg, corn syrup, vanilla, and brown sugar; whisk until combined. Add pecans to bottom of prepared pan. Pour half of egg mixture over pecans. Evenly distribute cut cinnamon rolls into pan. Pour remaining egg mixture over rolls. Bake 40-45 minutes, or until golden brown across top. Cool 15 minutes in pan, then run butter knife along edges of pan to loosen. Place serving plate over pan and turn over; remove pan. Spoon reserved icing over top. Enjoy!
This monkey bread is best served while warm. It will keep up to 3 days, covered, at room temperature.