Mushroom Tarts
["3 Tbsp. butter", "1/2 lb. mushrooms, finely chopped", "1/2 tsp. salt", "2 Tbsp. flour", "2 doz. small patty shells", "1 onion, finely chopped", "1/4 tsp. thyme", "dash of pepper", "1/2 c. sour cream"]
["Heat butter in skillet; add onion and cook until yellow.", "Add mushrooms; cook about 3 minutes.", "Sprinkle in seasonings and flour.", "Stir.", "Add sour cream; cook and stir until thickened. Cool.", "Fill tarts and bake 10 to 15 minutes in 450\u00b0 preheated oven.", "Can be made ahead, baked or frozen and heated when needed. Makes 2 dozen tarts."]
["butter", "mushrooms", "salt", "flour", "patty shells", "onion", "thyme", "pepper", "sour cream"]