1In a large pot, brown the ground beef over medium heat until fully cooked. Drain any excess fat.
Add the diced onions and bell peppers to the pot and cook until they are tender, about 5 minutes.
Stir in the Rotel tomatoes, kidney beans (with their liquid), chili powder, and cumin.
Bring the mixture to a boil, then reduce the heat to low and let it simmer for 20-30 minutes, stirring occasionally.
Taste and adjust seasoning if necessary. Serve hot.