Preparation: Preheat the oven to 180°C. Beat the eggs in a bowl and set aside.
Cooking: In a large non-stick frying pan, heat the olive oil over medium heat. Add the garlic and sauté until fragrant. Add the mushrooms and cook until browned.
Mixing: Add the Italian seasoning, salt, and pepper to the mushrooms. Stir well, then pour the beaten eggs over the mushroom mixture.
Baking: Transfer the pan to the preheated oven and bake for about 15 minutes, or until the eggs are set.
Serve: Serve the Italian Garlic Mushroom Frittata warm. Enjoy!