To make this recipe in a slow cooker, sauté the onion + garlic + beef on the stovetop as directed, then add the beef mixture to the slow cooker with the rest of the ingredients and cook on low for 4-6 hours or until you're ready to eat. Because this recipe comes together so quickly, we don't find that you save any time when you use the Instant Pot, so we recommend just doing it on the stovetop!