Heat a large skillet over medium/high heat and add the beef to the pan.
Break the meat up into small pieces and cook for 3-4 minutes.
Ground beef and onions cooked in a skillet with flavorful slow cooker chili spices.
Add the yellow onion and garlic to the pan and cook all the ingredients together until the ground beef is almost fully cooked but still has hints of pink.
Drain off half of the ground beef grease (keeping some in the beef for the chili) and pour the beef mixture into the slow cooker.
Add the rest of the chili ingredients to the slow cooker and mix until combined.