Begin by heating the oil in a large pan set over medium-high heat. When the oil is to temperature, add the ground beef, onion, and garlic. Cook for about 10 minutes or until the beef is completely browned and crumbled. Then drain and discard any excess fat before transferring the beef to the slow-cooker. Next, add the remaining ingredients and give a good stir to mix everything together. Set the crock-pot on "low" for 6-8 hours or "high" for 3-4 hours. Season with additional salt and pepper if desired and serve with cheese, chips, sour cream, and more!
