Pesto Stuffed Mushrooms - cooking recipe

Ingredients

2 lb. large fresh mushrooms
2 Tbsp. margarine
1 Tbsp. fine chopped onion
1 Tbsp. chopped basil
1/2 lb. Mozzarella cheese, grated
1/4 lb. pepperoni, finely chopped

Preparation

Core mushrooms to make cups.
Combine remaining ingredients and stuff mushrooms.
Bake at 350\u00b0 for 15 minutes.
Remove from heat and serve.