Tomato-Mushroom Hors D'Oeuvres
["2 lb. medium-sized mushrooms (36)", "3/4 pt. cherry tomatoes (about 18)", "1/2 c. Italian-flavored dry bread crumbs", "2 Tbsp. imitation bacon bits", "1 tsp. instant minced onion", "1/2 tsp. salt (optional)", "1/8 tsp. pepper"]
["Remove mushroom stems.", "Place mushrooms, round side down, in a shallow baking dish.", "Cut cherry tomatoes in half."]
["mushrooms", "cherry tomatoes", "Italian-flavored dry bread crumbs", "bacon bits", "onion", "salt", "pepper"]