If classic beef stew is the cozy sweater, Guinness beef stew is the same sweater but with a leather jacket on top. It is deeper, darker, and a little more interesting, thanks to stout. Guinness brings roasted malt flavor that reads like coffee and cocoa without tasting like dessert. It just makes the gravy taste like it has been working overtime.
This recipe gives you two paths: Dutch oven for max flavor and those browned bits, or slow cooker for the set-it-and-forget-it win. Either way, you get fork-tender beef, sweet root veggies, and a sauce you will want to drag bread through like it owes you money.

