Onion Soup Au Gratin

Yield: 1 Servings
Categories: Soups
1Loaf french bread
3tbButter
2cThinly sliced onions
1/4cFlour
5cBEEF STOCK
Salt & pepper
3/4cGrated med cheddar
3/4cGrated swiss
1/4cGrated Parmesan
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