1. Preheat oven to 400 degrees. Melt the butter in a 9-10 inch frying pan (cast iron works great) over medium heat. Add the thyme and onion and cook for 5 minutes. Place the potato, oil, Gruyere, mozzarella and salt and pepper in a bowl and toss to combine. 2. Top the onion with the potato mixture and bake for 45 minutes or until golden brown and cooked through. Turn upside down on a large plate to serve. ---------------------------------------------------------------------------
Nutrition
Ingredients
