Adapted from BHG One-Pan Recipes
Preheat oven to 350°F. Grease a 3-quart baking dish; set aside. In a small bowl combine green onions, snipped sage, thyme, garlic, salt, and pepper; set aside.
NOTE: If you like your gratin brown and very crispy on top, you can place the dish under the broiler for 1 to 2 minutes before serving.