Place olive oil in saute pan and add onions. Saute until onions are soft and translucent. Add ground beef and continue cooking until meat is no longer pink. When meat is cooked thoroughly drain fat from meat.
In large pan or dutch oven pour both beans, tomatoes and dry seasoning and stir until combined. Add meat and onion mixture to bean mixture and stir until combined. Bring to a boil. Once chili comes to a boil lower the heat to medium and allow chili to simmer for 30 minutes.
Serve in coffins or bowls. Top with shredded cheddar cheese.