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| eggs: 2 (large) |
| onions (chopped): 1/2 cup (chopped) |
| white mushrooms: 2 cups (chopped) |
| bread crumbs: 1/2 cup |
| all-purpose flour (unsifted): 1/4 cup |
| dried thyme (ground): 1/4 tsp |
| salt: 1 tsp |
| black pepper: 1/4 tsp |
| sharp cheddar cheese (shredded): 1/2 cup (grated) |
| hamburger buns: 8 buns |
Credit: Food.com