- Add the olive oil to a large pan over medium-high heat. Add onion and garlic. Cook for 3-5 minutes, stirring occasionally until fragrant. 
- Add the ground beef to the pot, breaking apart and cook until brown. 
- Add chili powder, cumin, sugar, oregano, salt, black pepper and cayenne pepper. Stir until well combined. 
- Add remaining ingredients to the pan. Simmer for 5 minutes and then spoon the chili into a 4-5 quart slow cooker. 
- Cook on low heat for 8 hours. 
- Top with your toppings of choice: avocado, cheese, sour cream/greek yogurt, oyster crackers, etc.