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| salted butter: 2 Tbl (divided) |
| onions (chopped): 1/2 cup (chopped) |
| white bread: 3 slices |
| eggs: 2 |
| 2% milk: 3/4 cup |
| cheddar cheese (shredded): 1/2 cup (shredded) |
| swiss cheese (shredded): 1/2 cup (shredded) |
| fresh basil (chopped): 1/2 tsp |
| black pepper: 1 dash |
| grated parmesan cheese: 2 Tbl |
Credit: Food.com