Absolutely! For a slow cooker: Follow the same steps for searing the beef and sautéing the vegetables in a skillet on the stovetop. Then, transfer everything to the slow cooker along with the potatoes, beef broth, Guinness beer, tomato paste, salt, pepper, and thyme. Cook on low for 6-8 hours or on high for 3-4 hours, or until the meat is tender and the potatoes are cooked through. For a pressure cooker: Begin by searing the beef and sautéing the vegetables in the pressure cooker using the sauté function. Add the potatoes, beef broth, Guinness beer, tomato paste, salt, pepper, and thyme, then seal the pressure cooker and cook on high pressure for about 30 minutes. Natural release for extremely tender beef, but you can quick release if you need to.