Heat a Dutch oven or large skillet over medium-high heat. Cook and stir beef and onion in the hot Dutch oven until browned and crumbly, 5 to 7 minutes; drain and discard grease..

Add cabbage, tomatoes, tomato sauce, stock, garlic, salt and pepper. Bring to a boil.

Cover Dutch oven, reduce heat, and simmer until cabbage is tender, about 30 minutes

One the cabbage starts cooking down you can always add more stock to your liking!