| 1/3 Cup onion, finely chopped |
| 1/2 Teaspoon freshly ground black pepper |
| 2 Cups Cheddar cheese, shredded |
| 1 Cup button mushrooms, sliced |
| 12 Slices TURKEY BACON SLICES, crisply cooked & crumbled |
| 2 green onion, finely chopped |
| 12 Medium hamburger buns, split and toasted |