Start the Flavor Base: Heat the oil in a large pot over medium-high heat. Add the diced onion, red bell pepper, jalapeños, and garlic. Cook until the onion is soft and translucent, stirring often so nothing burns.
1 tablespoon olive oil or canola oil, 1 medium yellow onion, 1 red bell pepper, ¼ cup jarred mild jalapeños, 1 tablespoon jarred minced garlic
Brown the Meat: Add the ground beef to the pot and cook until fully browned, breaking it up with a spoon. Season with salt and black pepper to taste.
1½ pounds lean ground beef or ground turkey, Salt, Black pepper
Bloom the Spices: Sprinkle in the chili powder, cumin, Mexican oregano, and cayenne pepper if using. Stir constantly and cook for about 30 seconds to toast the spices and deepen their flavor.
2 tablespoons chili powder, 1½ teaspoons ground cumin, ½ teaspoon Mexican oregano, ½ to 1 teaspoon cayenne pepper
Add the Tomatoes: Stir in the diced tomatoes with their liquid, tomato sauce, tomato paste, and diced green chilies. Mix well until everything is evenly combined and thick.
1 can diced tomatoes with green chilies, 1 can tomato sauce, 1 can tomato paste with Italian seasoning, 1 can diced green chilies
Add the Beans: Add all the drained beans to the pot and stir until fully coated in the chili mixture. If the chili looks too thick, add ¼ to ½ cup water or beef broth to loosen it slightly.
1 can chili beans or pinto beans, 1 can kidney beans, 1 can black beans, ¼ to ½ cup water or beef broth
Simmer to Perfection: Reduce heat to low and let the chili simmer uncovered for 1 to 2 hours, stirring occasionally to prevent sticking. Taste and adjust seasoning as needed.
Slow Cooker Option: If using a slow cooker, complete the first four steps on the stovetop, then transfer everything to the slow cooker. Add the beans, stir well, and cook on low for 4 to 6 hours.
Serve and Win: Serve hot in bowls. Optional toppings include shredded cheese, sour cream, cornbread, or corn chips—because no one ever won a chili cook-off by skipping the toppings.