In a bowl, mix ground beef, cracker crumbs, milk, salt, pepper, and onion.
Shape the mixture into oval patties and place on a baking sheet.
Bake at 350°F (175°C) for 25 minutes.
In a saucepan, heat the cream of mushroom soup, water, butter, and garlic powder until combined.
Pour the sauce over the baked steaks and return to the oven for another 10 minutes.
Serve hot with mashed potatoes or your favorite side dish.