Potato, Onion And Gruyere Galette - cooking recipe

Ingredients

2 1/2 tablespoons butter
12 springs fresh thyme
1 large sweet onion, sliced into 1/4 inch slices (it's best to cut them slightly thicker)
3/4 - 1 lb waxy potato, peeled and sliced (low starch potatoes)
2 tablespoons oil
1/2 cup gruyere, grated
1 cup mozzarella cheese, grated
sea salt and black pepper

Preparation

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.
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.