Vegetarian/Spinach Borg

Ingredients

• 8 ounce phyllo dough
• 300g onion
• 3-4 mushrooms
• 0.25 cup butter
• 10 ounce chopped spinach
• 1 salt/pepper to taste
• 0.50lb muenster cheese
• 0.50lb mozzarella cheese
• 1 egg
• 1 egg