Ingredients

1-1/2 cups Sliced onions (about 3 medium)
8 oz. Button or cremini mushrooms, sliced (3 cups)
1 tbsp. Olive oil
2 tbsp. Snipped fresh parsley
2-1/2 lb. 85-percent lean ground beef
1/3 cup Worcestershire sauce
4 cloves Garlic, minced
1-1/2 tsp. Salt
1 tsp. Ground black pepper
16 slices Applewood smoked bacon (about 1 lb.) (optional)
8 slices Swiss, provolone, and/or Colby and Monterey Jack cheese (optional)
8 Kaiser rolls or hamburger buns, split and toasted*
Tomato slices (optional)

Description

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