Made this one up myself after I couldn't find a recipe on line that already sounded like what I had in mind. I do that a lot...
4 lbs lean ground beef
1/2 cup finely diced onion
1-2 Tbs soy sauct
1-2 Tbs Worcestershire sauce
Mix this up and let the flavors marinate a bit while you make the gravy in a cast iron skillet:
2 Tbs bacon grease, chicken fat from stock, or some other fat
1 large chopped onion
2 cups sliced mushrooms
1 large finely diced green bell pepper
1/4 cup corn starch
4 cups chicken stock/broth
2 Tbs Maggi seasoning, or soy or Worchestershire or salt and pepper to taste
Saute the veggies in the fat. Mix the corn starch, Maggi or other seasoning and cold chicken stock. Add to skillet after veggies are soft and have finished yielding their juices. Allow to thicken, adding more corn starch in water if too thin and more stock if too thick. Lower temp just to a bubble.
Meanwhile, form ground beef mixture into oval, hand-sized patties and cook on a griddle, pressing down the patties with a spatula so that the edges of the patties "fray." Brown each side of the patties and then slip them into the skillet of gravy. You can keep them moist and warm in the gravy over a low temp for some time until you're ready to eat. Serve over mashed, skin-on red potatoes and be very generous with the gravy!
My family loved this way more than any meatloaf I've ever made, and said it was a great gluten-free alternative to our usual Wednesday night favorite--hamburgers.