Lobster and Crabmeat-stuffed Mushrooms

Ingredients

• butter
  2 tablespoons
• minced celery
  2 tablespoons
• minced onion
  1 tablespoons
• minced red bell pepper
  1 tablespoons
• mushrooms
  2 pounds
• oyster crackers - crushed
  1 cup
• cooked lobster meat - chopped
  6 oz
• cooked crab meat - picked over and shredded
  4 oz
• shredded white cheddar cheese
  ¼ cup
• egg
  1 unit
• water
  2 tablespoons
• Old Bay seasoning
  ¼ teaspoons
• garlic powder
  ⅛ teaspoon
• salt
  ⅛ teaspoon
• pepper
  ⅛ teaspoon
• olive oil
  3 tablespoons
• shredded white cheddar cheese
  ⅔ cup