Mushroom & gruyère frittata

Name: Mushroom & gruyère frittata
Prep time: 5 min
Cook time: 25 min
Total time: 30 min
Yield: 2 servings
Ingredients: To taste Black pepper; 150 gr of Chestnut mushrooms; ½ tsp of Dry parsley; ½ tsp of Dry thyme; 1 tbsp of Extra virgin olive oil; To taste Fine sea salt; 1 pinch of Ground nutmeg; 60 gr of Gruyere cheese; 4 Medium egg; 30 ml of Semi skimmed milk