I love parties and I love making appetizers for parties. The holidays especially are fun for me with appetizers. This recipe is fairly new to me, but I've made it already several times for my hubby's family. He is a mushroom fanatic. This recipe gets requested quite often for the holidays.
Remove mushroom stems; chop enough stems to measure 1/2 cup. Cook half of mushroom caps in 3 tablespoons margarine over medium heat for 5 minutes; drain. Repeat with remaining mushroom caps and margarine.
Combine cream cheese and blue cheese, mixing until well blended. Stir in chopped stems and onions; fill mushroom caps. Place on cookie sheets; broil until golden brown.