Ingredients:

1/4 cup mashed drained canned kidney beans
1 pound ground beef (7% fat)
6 tablespoons hickory barbecue sauce
4 teaspoons prepared white horseradish
4 teaspoons minced garlic
1/2 teaspoon salt
1/2 teaspoon pepper

Nonstick vegetable oil spray
4 oversize wheat rolls, halved
4 1/3-inch-thick slices red onion
Watercress sprigs

Methods:

Place mashed beans in medium bowl.Mix in next 6 ingredients.Shape into four 1/2-inch-thick patties.

Prepare barbecue (medium heat).Spray cut sides of rolls and both sides of burgers and onion slices with nonstick spray.Grill cut sides of rolls until toasted,about 1 minute.Transfer rolls to plates. Grill burgers about 4 minutes per side for medium;grill onion slices about 5 minutes per side. Place 1 burger,1 onion slice and some watercress on each roll bottom.Cover each with roll top.