Prepare waffle fries according to package directions. Shred beef pot roast with two forks.
Meanwhile, combine beef and barbecue sauce in a medium saucepan. Heat beef mixture over medium heat 8 to 10 minutes or until beef is heated through, stirring occasionally.
Reduce oven temperature to 350°F. Top waffle fries with beef mixture, beans and cheese. Bake in 350°F oven 5 to 7 minutes or until mixture is heated through and cheese is melted.
Top mixture with sour cream, if desired. Sprinkle with green onions.
Nutrition information per serving: 286 Calories; 81 kcal Calories from fat; 9 g Total Fat; 3 g Saturated Fat; 1 g Monounsaturated Fat; 34 mg Cholesterol; 653 mg Sodium; 28 g Total Carbohydrate; 3.6 g Dietary Fiber; 21 g Protein; 2.1 mg Iron; 2.3 mg NE Niacin; 0.2 mg Vitamin B6; 1.1 mcg Vitamin B12; 3.6 mg Zinc; 15.6 mcg Selenium; 57.8 mg Choline;