20 Easy Casserole Side Dishes for Thanksgiving

published Nov 11, 2021

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Broccoli au Gratin in casserole dish. — Credit: Photo: Kristin Teig | Food Stylist: Catrine Kelty
Broccoli au Gratin

The beauty of casseroles is that there’s one for every single occasion. There are eggy breakfast casseroles, veggie-packed casseroles, extra-creamy and ultra-comforting casseroles, and low-carb casseroles. But I have a special fondness for casserole side dishes.

A casserole side dish is my crutch for rounding out weeknight dinner, and as I plan Thanksgiving dinner it’s one of my first considerations on the roster of sides (after the stuffing recipes and mashed potatoes, of course).

From classics like green bean casserole and sweet potato casserole, to a super-cheesy Brussels sprout casserole, here are 20 casserole side dishes to make for Thanksgiving.

Staub Rectangular Baking Dish

Bed Bath & Beyond

1 / 19

Jiffy Corn Casserole

Thanks to a box of Jiffy corn muffin mix, this corn casserole comes together quickly and is a perfect side dish for any meal.

2 / 19

Zucchini and Squash Casserole

In this recipe, very simple ingredients come together in the oven to create an irresistible dish more delicious than the sum of its parts.

3 / 19

Twice-Baked Potato Casserole

Every bite of this twice-baked potato casserole is warm and comforting while overflowing with melty cheese and crisp bacon.

4 / 19

The Easiest 5-Ingredient Sweet Potato Casserole

You know and love sweet potato casserole. Here's how to make it even easier.

5 / 19

Cheesy Broccoli Rice Casserole

This dish features broccoli and long-grain and wild rice enrobed in delicious cheese sauce and covered in crispy breadcrumbs. Yes, please!

6 / 19

Make-Ahead Creamy Mac & Cheese Casserole

You can prep this creamy, dreamy mac and cheese days ahead of time and just pop it in the oven when you're ready to serve it.

7 / 19

Scalloped Potatoes

With its layers of cream and potatoes, and then more cream and more potatoes, all baked until bubbly — well, I would be hard-pressed to think of another dish that pairs comfort and elegance quite so perfectly.

8 / 19

Broccoli and Cheese Spaghetti Squash Casserole

Tender strands of spaghetti squash are tossed with crisp-tender broccoli and enveloped in a fluffy, cheesy custard, giving you all the best parts of the classic side wrapped up into a feel-good, veggie-packed main.

9 / 19

Wild Rice and Kale Casserole

This vegetarian casserole puts a big helping of greens on your plate and embraces cold-weather cooking head-on with nutty rice, a hint of sage, and the warmth of nutmeg.

10 / 19

Smashed Potato Casserole

All the great things about mashed potatoes, made even better with extra cheese and a crispy topping.

11 / 19

Brussels Sprout Casserole

This easy Brussels sprout casserole is loaded with bacon and lots of melted cheese, and comes together in a single skillet.

12 / 19

Classic Green Bean Casserole

Learn how to make green bean casserole using the right grocery store shortcuts to rival the classic back-of-the-box recipe.

13 / 19

Modern Green Bean Casserole

The real treat in this twist on the classic casserole is the sesame-stick topping.

14 / 19

Loaded Cheesy Cauliflower Bake

Inspired by loaded potatoes, this comforting casserole calls for roasted cauliflower as the base.

15 / 19

Fennel, Carrot, and Leek Gratin

Fennel, carrots, and leek are mixed with an aromatic Parmesan cream sauce and topped with pecans and breadcrumbs for the ultimate veggie gratin.

16 / 19

Broccoli au Gratin

This comforting bake of tender broccoli in a creamy sauce, topped with buttery breadcrumbs and Parmesan cheese, is sure to please.

17 / 19

Creamy Cabbage Gratin with Bacon and Mushrooms

Creamy Gruyère sauce and a tumble of sautéed mushrooms elevate a humble head of cabbage into an impressive side dish.

18 / 19

Broccoli Rabe and White Bean Gratin

You can assemble this side dish up to two days in advance and tuck it away in the fridge until Thursday rolls around.

19 / 19

Parsnip, Mushroom & Leek Gratin

This ultra-cozy casserole is just the way to turn a bunch of parsnips into a crowd-pleasing side.

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