Canapes And Nibbles - Mini Mushroom And Spring Onion Frittatas

Ingredients

• 120 g Button chestnut mushrooms thinly sliced
• 6 Eggs med
• 100 g Gruyere cheese grated
• 4 Spring onions finely chopped
• 2 Garlic clove finely chopped
• 2 tbsp Double cream
• 25 g Butter unsalted
• 1/2 tsp Salt
• 1/2 tsp Freshly ground black pepper