Mushroom & Pepperoni Frittata

Ingredients

• 2 tablespoon olive oil
• 100 g mushrooms,sliced (40z)
• 8 Eggs
• 4 tablespoon milk or water
• 1/4 teaspoon salt
• ground black pepper
• 50 g stoned black olives, sliced (2 oz)
• 50 g slice pepperoni (2 oz)
• 50 g grated parmesan cheese (2 oz)