Heat the oil in a casserole or large saucepan and sauté the onion until transparent, 2-3 minutes. Add garlic and sauté until fragrant, about 1 minute.
Add the ground beef and stir-fry until browned, 3-4 minutes. Pour in the beef stock or water. Bring to a boil then simmer over medium heat. Add diced potatoes and carrots and simmer until potatoes and carrots are