Add the ground beef and onion to a large skillet. Cook over medium-high heat, breaking the meat into crumbles, until the beef is browned and cooked through and the onion is softened. Add the garlic and cook for 30-60 seconds, just until fragrant.
Remove the meat and onion mixture from the heat and, if needed, drain off any excess grease. Add the browned meat to the base of the slow cooker.
Add the crushed tomatoes, diced tomatoes, 1 tablespoon Worcestershire Sauce, 2 tablespoons chili seasoning, and rinsed and drained beans to the slow cooker. Stir to combine evenly with the meat.
Place the lid on the slow cooker and cook on low for 8-10 hours or on high for 4-5 hours.
Taste and adjust seasonings if needed. Then serve with cheese, sour cream, chips, cornbread, etc.
Video
Notes
No Premade Chili Seasoning? Add 1 tablespoon chili powder, 1 teaspoon cumin, ¼ teaspoon cayenne pepper, ¼ teaspoon garlic powder, ½ teaspoon onion powder, 1 teaspoon salt, and ½ teaspoon black pepper to the slow cooker instead of 2 tablespoons prepared chili seasoning.Ground Meat: Ground beef, turkey, chicken, or bison all work well. For the best flavor without excessive grease, I recommend using 85/15 or 90/10 ground meat.Thickness: This recipe makes a thick chili. For a thinner chili, stir in up to ½ cup beef broth, pale lager, or dry red wine before cooking.Beans: Use a mix of dark and light kidney beans or all of one variety. Pinto, red, or black beans also work well.Tomatoes: Fire-roasted tomatoes are optional but add a subtle smoky flavor. For picky eaters, I blend the diced tomatoes before adding them to the chili.For Spicier Chili: Sauté a seeded, minced jalapeño with the beef and onion, or increase the cayenne to taste.Storage: Cool the chili, then refrigerate in an airtight container for up to 4 days or freeze, leaving 1 inch of headspace, for up to 3 months. Thaw overnight in the refrigerator and reheat gently in the slow cooker, on the stovetop, or in the microwave until warmed through.