Actually, please don't. Beef stew doesn't need to be super, super thick. ... If you do prefer your stew on the thicker side, though, you can toss your beef in flour or cornstarch before you sear it—the bits left behind will thicken your stew and add deeper flavor.

Will beef stew thicken as it cooks?

Your stew broth should naturally thicken while cooking, thanks to the release of starch from the potatoes in your stew, and also from the collagen that cooks out of the meat, adding body to the liquid.

How do you fix thick stew?

Mix one teaspoon cornflour with a tablespoon of room temperature water and add to your stew. Then bring to the boil and cook until desired thickness is reached. Cornflour is a great gluten-free thickener. It has a slightly more gelatinous texture, so only add a teaspoon at time or your sauce may become a bit goopy.