Preheat oven to 400 degrees F. Remove stems from
mushrooms; chop finely and set aside.

In
a large frying pan over medium heat, melt butter. Add chopped mushroom stems,
onions, and garlic. Saute approximately 5 to 6 minutes or until onions are
translucent.
Reduce heat to low; add parsley, cream cheese, blue cheese, lemon
juice, and cream sherry or port. Stir until cheeses are melted and well blended.
Remove from heat.
Season to taste with
salt and pepper.

Spoon cheese mixture into the mushroom caps, filling
generously.
Place stuffed mushroom caps on a baking sheet
with sides.
Bake approximately 8 to 10 minutes until mushrooms are cooked and
cheese is melted. Remove from heat and place mushrooms on a large serving plate
or platter. Serve immediately.
Makes 24
stuffed mushrooms.