1 large potato, peeled and shredded
1 cup shredded Swiss cheese
1 cup chopped fresh mushrooms
2 pounds lean ground beef
2 (1 ounce) packages dry onion soup mix
Procedures : Preheat grill for high heat.
In a medium bowl, mix together potato, cheese, and mushrooms.
In a large bowl, mix ground beef with onion soup mix. Form into 6 large burger patties. Make a pocket in each burger, stuff with potato mixture, and seal.
When ready to grill, brush grate with oil. Cook burgers over high heat for 5 minutes on each side, or until well done. Serve hot