Winter Spinach Potato Casserole

1/3 cup extra virgin olive oil
2 onions, chopped
1 lb potato, sliced very thinly
2 cloves garlic, crushed
2 tsp chopped fresh thyme or parsley
2 cups fresh spinach
1 cup diced fresh tomatoes
4 eggs, beaten
1/2 cup mozarella cheese shredded
salt and pepper to taste

Preheat oven to 400 degrees. Heat oil in a stovetop-to-ovenproof casserole dish. Add onions, potatoes, garlic, and herbs and saute for 5 minutes, stirring until vegetables are well coated with oil and the potatoes are beginning to turn golden. Place casserole in preheated oven and bake for 25 minutes, then remove, stirring in the spinach, tomatoes and eggs. Sprinkle the top with cheese and return the dish to the oven. Bake10 minutes, or until the eggs are set. Serve hot.