Course: Main Course
Cuisine: American
Keyword: butternut squash, caramelised onion, crustless quiche, egg bake, frittata, kale, onion, sweet potato
*If you don't have an oven safe skillet, simply sauté all of the vegetables as described. Once they're cooked, pour the vegetables in a greased 8x8 or 9x9 oven safe baking dish. Pour the egg mixture over the top and bake as directed.