How do you thicken watery lasagna?

Cheat shamelessly, and thicken the sauce with a small quantity of cornstarch or quick-mixing “gravy” flour stirred into cold water or tomato juice. Simmer the sauce until enough moisture evaporates to thicken it naturally. This concentrates the flavors as well, so it’s the best option when time permits.

How do you reduce the liquid in a lasagna?

3 Ways to Make Better Lasagna
  1. “Always use the no-boil noodles. They won’t get soggy and will absorb extra liquid. …
  2. “Make the lasagna early in the day or a day ahead, cooling it completely, then reheating it gently. …
  3. “Last but not least, be patient!

How do I make my lasagna more solid?

(2) Use less sauce or make the sauce thicker. You can accomplish the latter by starting with thicker ingredients (tomato puree vs. chopped tomatoes), or by reducing it on the stovetop somewhat first. (3) For ricotta fillings, indeed add a couple of eggs to help them setup.