In a large pot or Dutch oven, heat 1 tablespoon of oil over medium-high heat. Throw in the ground beef and onion and cook for 6 minutes until they are nicely browned. Once cooked, remove any excess fat from the pan.
Sprinkle in your chili powder, cumin, black pepper, and salt in the pan. Stir until everything is combined and the spices are distributed evenly throughout.
Now pour in your kidney beans, pinto beans, black beans, diced tomatoes, and tomato sauce. Bring to a boil then reduce heat to low and simmer for 30 minutes.
Let your chili rest for 10 minutes before serving. Serve with crackers, shredded cheese, sour cream, and diced onions. Enjoy your delicious bowl of Brenda Gantt’s Chili!