Stuffed Mushrooms
["16 small mushrooms (about 1/5 lb.)", "1 Tbsp. butter or margarine", "1 Tbsp. finely chopped green pepper", "3 Tbsp. finely chopped onion", "1 tsp. salt", "1/8 tsp. pepper"]
["Preheat oven at 350\u00b0.", "Wipe mushrooms with damp cloth.", "Remove stems and chop stems finely; set aside.", "Heat butter in large skillet; saute mushroom caps, on bottom side only.", "Arrange rounded side down in shallow baking pan."]
["mushrooms", "butter", "green pepper", "onion", "salt", "pepper"]