Onions Au Gratin
| Yield: | 8 Servings |
| Categories: | Vegetables |
| 6 | md | Yellow onion |
| 1/4 | c | Butter or margarine |
| 1/2 | c | Beef broth |
| 1/2 | c | Whipping cream |
| 2 | tb | All-purpose flour |
| 1/4 | ts | Salt |
| 1/8 | ts | Pepper |
| 1/2 | c | Swiss cheese; shredded |
| 1/2 | c | Parmesan cheese; grated |
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