Leftover French fries. As many as you have.

Onion. Rough chopped, or however you like. Onion is essential to this recipe, I think.

Eggs. I usually do at least six eggs so we can get several servings out of the dish. I consider eggs essential to the dish, but you could also play with another protein. Ground beef? Veggie crumbles?

Other veggies. Diced bell peppers would be great. As would zucchini, asparagus, broccoli or anything that you can dice and sauté quickly. Or, greens that heat nicely, like spinach. Raid your fridge!

Herbs? Fresh or dried. Whatever you like and whatever you have.

Salt, pepper and other seasonings. Garlic salt,  onion salt or another seasoning mix could be your friend here. Of course, if your fries came pre-seasoned, you could be good to go.

Ketchup. If you like ketchup on your breakfast hash, bring it on!