Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  40                    bite-size mushrooms
   1      tablespoon    butter or margarine
   2      teaspoons     flour
     1/4  cup           rich milk
   1      tablespoon    lemon juice
   1      tablespoon    salad dressing
     1/4  cup           shredded cheddar cheese
   4 3/4  ounces        crab -- membrane removed
   1      teaspoon      onion flakes -- crushed

Preparation:

Remove mushroom stems and reserve for another purpose. Melt butter in saucepan. Stir in flour. Add milk, lemon juice and salad dressing, stirring until it boils and thickens. Add cheese. Stir to melt. Stir in crab and onion. Fill mushroom caps. Bake in 400º oven for 15 to 20 minutes, or until heated through.