This Instant Pot Chili Macaroni Soup is an easy one-pot dinner made with ground beef, chili beans, tomatoes, tender macaroni, and melted cheddar cheese. Everything cooks right in the Instant Pot for a hearty, family-friendly meal with classic chili mac flavor and minimal cleanup. It is a cozy weeknight dinner that comes together quickly and is perfect for busy nights.
Turn the Instant Pot on to saute mode. Add in the ground beef and diced onion. Cook until no longer pink; drain any grease if necessary.
Add in the tomato sauce, diced tomatoes, chili beans, beef broth, seasonings, and uncooked macaroni. Push the macaroni into the liquid so it's all covered.
Place the lid on the pot and seal the valve.
Set the pot to manual (high pressure) for 5 minutes.
Once the cooking time is up, do a quick release. Remove the lid and stir to combine. Then add in the cheese and stir until all is melted and combined. Serve immediately.