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Separate onion layers and cook in boiling salted water to cover until soft. Drain in a colander. Melt butter in a saucepan and stir in flour. Gradually add cream and milk in a slow stream, whisking until mixture thickens. Add onions, clove, salt and pepper. Cook over low heat and add parsley. Transfer to a heatproof serving dish and sprinkle over with bread crumbs and parmesan cheese. Heat before serving. |