Creamed Mushrooms and Ham on Toast

Preparation Preheat oven to 350°F. Arrange bread slices on a baking sheet and spread with 2 tablespoons butter. Toast in middle of oven until golden, about 10 minutes. Heat 1 1/2 tablespoons butter in a 12-inch heavy skillet over moderately high heat until foam subsides, then sauté mushrooms in 2 batches until liquid from mushrooms is evaporated and mushrooms are browned, 6 to 8 minutes, adding 1 1/2 tablespoons butter for second batch. Transfer as cooked to a plate with a slotted spoon. Melt remaining 2 tablespoons butter in skillet over moderate heat, then whisk in flour and cook roux, whisking constantly, 2 minutes. Add milk in a slow stream and bring to a boil, whisking constantly. Reduce heat and simmer, whisking occasionally, 5 minutes. Whisk in sour cream, salt, pepper, and Maggi seasoning, then stir in mushrooms. Cook over low heat, stirring, until heated through, about 2 minutes. (Do not let boil.) Arrange a slice of ham on each toast and top with mushrooms and sauce.

Preparation Preheat oven to 350°F. Arrange bread slices on a baking sheet and spread with 2 tablespoons butter. Toast in middle of oven until golden, about 10 minutes. Heat 1 1/2 tablespoons butter in a 12-inch heavy skillet over moderately high heat until foam subsides, then sauté mushrooms in 2 batches until liquid from mushrooms is evaporated and mushrooms are browned, 6 to 8 minutes, adding 1 1/2 tablespoons butter for second batch. Transfer as cooked to a plate with a slotted spoon. Melt remaining 2 tablespoons butter in skillet over moderate heat, then whisk in flour and cook roux, whisking constantly, 2 minutes. Add milk in a slow stream and bring to a boil, whisking constantly. Reduce heat and simmer, whisking occasionally, 5 minutes. Whisk in sour cream, salt, pepper, and Maggi seasoning, then stir in mushrooms. Cook over low heat, stirring, until heated through, about 2 minutes. (Do not let boil.) Arrange a slice of ham on each toast and top with mushrooms and sauce.