Zucchini Rice Casserole (Small Batch Recipe) (2024)

FAQs

Why is my zucchini casserole watery? ›

Mistake # 1: It's watery

Squash contains a lot of water, so you need to do a little prep work to mitigate for that. After slicing the squash, salt the slices and place them on a paper-towel lined baking sheet. Let it sit for 30 minutes so that the salt can draw out some of its water.

Don't overcrowd the pan, which can cause the zucchini to steam instead of roast. Unless you have time to salt and drain the zucchini, wait to salt it until after they're cooked so the salt doesn't draw out the moisture in the oven—this can lead to sogginess.

Use one tablespoon cornstarch mixed with one tablespoon cold water (aka a cornstarch slurry) for each cup of medium-thick sauce. Thoroughly mix the cornstarch and water together, then pour into your sauce. Cook and stir over medium heat until thickened and bubbly.

The salt draws the moisture from the flesh which helps ensure that the vegetable stays firm during roasting. This moisture (and excess salt) is patted off with a paper towel before cooking. Added benefit: the salt works its way into the scores of the flesh and seasons the zucchini all the way to the center.

Arrange the zucchini pieces into a single layer on a baking sheet lined with parchment paper. (It will stick to the pan if you don't line it first!) Freeze the zucchini for about 1 hour, until it's firm to the touch, then transfer it to an airtight container to preserve the flavor as you store it.

On the other hand, they may simply be waterlogging if your garden is poorly drained. Another possibility is squash bugs have damaged them and rot has set in as a result. In the meantime, keep removing the infected fruit as soon as you see signs of the problem.

Whisk together equal parts cornstarch and cold water in a small bowl. Use one tablespoon of cornstarch per cup of liquid you would like to thicken. Stir out all the lumps. A few minutes before your casserole is done, add it a little at a time until you are happy with the thickness.

To prevent a soupy casserole, be sure to fully thaw any frozen vegetables in a colander over a bowl, and pat dry, squeeze excess moisture out of greens like spinach or chard, and quickly precook watery fresh vegetables like onions, mushrooms or squashes just until they release their moisture.

The solution for watery casseroles is instant potato mash powder or cornflour - slake (mix with a little water) at first or it will go lumpy. Stir well. Alternatively, don't add so much water at first, especially if you're using a slow cooker.