How To Reheat Frozen Cooked Spaghetti Squash. The trick is to toss in a splash of water before heating for one minute. Once cooled, refrigerate it in an airtight container.

You will use an olive oil splash or two to make it taste extra. After, you can toss the spaghetti squash into a medium saucepan with your favorite pasta sauce and. How do you reheat frozen spaghetti squash?