If you’ve been reading this blog for a while, you’ll know that we adore Thanksgiving sides (they’re kind of our thing) and that we also love to take a vegetable and ‘au gratin’ it. Case in point: our creamy Brussels Sprout gratin, Broccolini Au Gratin, Cauliflower Au Gratin and of course, the OG: Potatoes Au Gratin.
This year, this richly cheesy squash gratin recipe came like a revelation. What could be more cozy for the drizzly fall and winter months than squash? How had we never thought to au gratin squash!? Sweet, hearty squash is a perfect partner for all of the classic flavors of au gratin, and the dish itself is a gorgeous addition to your Thanksgiving feast. Just picture this bubbling masterpiece next to mashed potatoes, a big, Perfect Roast Turkey, Stuffing, Cranberry Sauce — the works!
Ingredients
Squash: For this easy squash gratin, you’ll leave the skin on (for ease and because it makes for a nice texture)so you need to use a squash with skin that’s OK to eat. Both delicata or acorn squash work well.
Garlic: Don’t make a cream sauce without it!
Cream: Heavy cream is really the only option for a gratin. No subs here, sorry friends!
Mustard: Dijon is the one and only. Gratin is a classic, simple dish, and it doesn’t do well with subs.
Shallots: Sweet and delicate, shallots are just right with the sweet, buttery squash.
Cheeses: Gruyère and Parmesan, freshly grated so they melt beautifully into the cream sauce.
Herbs and spices: Fresh sage, fresh thyme and nutmeg
How To Make Cheesy Squash Gratin
Slice the squash. You’ll leave the skin on, because peeling squash is the worst. In fact, the skin of acorn squash (or delicata) is super nutritious.
Roast the squash! A little oil and salt, and roast it for 20 minutes.
Make the cream sauce. Start with butter and oil, then shallots, garlic, sage, and thyme. Pour in the cream, mustard, and nutmeg and stir while it all melds together.
Make it cheesy. Gruyère and Parmesan cheese — does it get any better than those two salty, nutty, rich cheeses?
Bring it all together. Pour the cheese sauce over the roasted squash, and bake for another 20 minutes, until the gratin is bubbly and gorgeous.
How To Make It Ahead
We love a make-ahead side dish all year round, but on Thanksgiving Day, we don’t just love them we need them. Thankfully, this gratin is easy to prep a day ahead of time! A day or two ahead of time, you can:
Roast the squash. Just let it cool, and bring it to room temperature before you add the cream sauce and do the second bake.
Grate the cheeses. Store bought, pre-shredded cheeses have additives that make them less inclined to melt well, but you can grate your Parmesan cheese and your Gruyère a few days ahead of time. Just store them in a zip-top bag in the fridge.
More Easy Squash Side Dish Ideas
What’s On Your Menu?
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