Stuffed Mushrooms

1- 8 oz. pkg of cream cheese
1 cup parmesian cheese
1 TBSP. Sour Cream
250 ml. or one can of crab
1 TBSP. Very finely chopped Onion

Mix above ingredients in bowl, stuff cleaned and peeled mushrooms. Bake in 400 F. degree oven for 10 minutes or until mushrooms are surrounded by water in the pan. Let sit for 3 minutes and serve with your favourite main dish.