Sadly, it's a common mistake that everyone makes when cooking gravy. One of the quickest solutions in this scenario is to whisk in a few tablespoons of slurry. But what if you don't have any flour ...

Cook’s notes: If you want a thicker sauce, combine 1 tablespoon cornstarch with 2 tablespoons water (this is called a slurry). Add the slurry in step 4 after the broth and cream have simmered ...