Vegetable Casserole Recipes

A gratin is any dish topped with cheese or breadcrumbs mixed with butter, then heated until browned--but it needn't be heavy. This one has plenty of garden-fresh tomatoes and herbs, a touch of full-flavored cheese and a crispy crumb topping.

These mini vegetarian shepherd's pies feature lentils, carrot and corn, crowned with a velvety mashed potato topping. The recipe can also be made in a broiler-safe casserole dish. Serve with a spinach salad with oranges, walnuts and red-wine vinaigrette.

Fancy up regular mashed potatoes with a layer of mushroom duxelle--a sauté of finely chopped mushrooms and shallots. We omitted the traditional butter in the duxelle and added chard for a nutritional boost. Serve this hearty side in place of mashed potatoes at any holiday feast or enjoy it as a vegetarian main dish.

This delicious zucchini gratin recipe has a delectable crispy Parmesan and breadcrumb topping and is made without any butter or cream, allowing the fresh zucchini flavor to shine. Slice the zucchini uniformly to ensure even cooking.

Vegetable gratin recipes often have a crunchy breadcrumb or crouton topping. But summer tomatoes are too gorgeous to hide, so we tucked crusty cubes of bread underneath them instead. Plus, the bread soaks up all the juicy tomato goodness. If you can't find marjoram, fresh basil or oregano makes a good substitute.

This broccoli-quinoa casserole makes a hearty vegetarian main dish. As the quinoa absorbs water and cooks, it creates the perfect amount of steam for cooking the broccoli. The broccoli is crisp-tender and adds texture to contrast with the creamy, cheesy quinoa. Swap in tricolor quinoa, if you prefer.

Hotdish may be a Minnesota tradition but everyone, everywhere, should add this cheesy casserole to their fall dinner rotation.

This pretty vegan layered casserole is so simple to make. Its only seasonings are salt and garlic-infused olive oil, which you make by sizzling a clove of garlic in olive oil for about a minute. This dish is lovely warm or room temperature. Serve with crusty bread as a vegetarian entree or alongside roasted meats as a side dish--don't forget a glass of chilled rosé.

Thanks to fresh green beans, an easy homemade cream sauce and crispy onion topping, this green bean casserole recipe is healthier and more delicious than traditional recipes that use canned soup, beans and onions. Plus, the slow cooker saves you time cooking at the stove. Make sure to use fresh green beans, as frozen green beans will become mushy.

Typical green bean casseroles bathe ingredients in a heavy cream sauce and top them with buttered breadcrumbs or cheese. Our healthier version saves about 160 calories and 12 grams of saturated fat compared to a traditional recipe.

Make this quick and easy casserole for Sunday brunch or breakfast any day of the week!

Instead of loading up this comfort food side with tons of brown sugar and marshmallows, we have turned to sweet spices, vanilla and inherently sweet dried fruit to enhance the natural sweetness of the sweet potatoes. A topping of pecans and pepitas replaces traditional marshmallow topping to keep it healthy and add texture and color for a beautiful casserole.

Classic eggplant Parm is filled with cheese, but this vegan eggplant Parmesan combines nondairy mozzarella cheese with nutritional yeast for a dairy-free cheesy substitute that gives you the comfort food factor without animal products. For the breading, use egg replacer, which you can find in natural-foods stores and the special-diet section of large supermarkets.

Now everyone can enjoy classic Thanksgiving favorites, like this dairy-free green bean casserole. We make a homemade vegan cream of mushroom soup using almond milk for the creamy base that's combined with fresh green beans. Top it off with classic french-fried onions (we have a vegan recipe for that, too!) for a side dish everyone will devour.

Tender strings of spaghetti squash replace pasta in this cheesy gluten-free casserole that's studded with broccoli. Cheddar cheese melts into a bubbling topping. Serve with roasted chicken or pork or as part of a vegetarian dinner.

This lightened-up take on the classic Thanksgiving sweet potato casserole is spiked with crushed pineapple and toasted pecans. We top it with an airy, slightly sweet meringue. You can pipe the meringue to make it look fancy or simply spread it neatly with a rubber spatula.

Nonfat milk and a bit of sharp Cheddar combine to make a rich sauce without all the butter usually found in gratins.

These scalloped potatoes are surprisingly rich and creamy even though they're made with no dairy (milk, butter or cheese)--vegan comfort food at its best. We use almond milk, herbs and spices to make a flavorful sauce and finish the dish with a crunchy almond topping. This makes a satisfying side dish if you're cooking for dairy-free or vegan diets.

If you're looking for a twist on classic scalloped potatoes, this recipe using roasted sweet potatoes and melty Gruyère has all the creaminess of the original with a new flavor twist. The sweet potatoes and lightened sauce--made with flour and low-fat milk--keep it healthier than butter- and cream-laden versions. Don't cut your sweet potatoes too thin--they'll turn mushy under the sauce.

This yellow squash casserole is a great rendition of the classic—it's still super cheesy, but much healthier for you. Look for medium or even small yellow squash, as large ones tend to water out more. Be sure to remove as much water as possible after boiling the veggies and before assembling the squash casserole so it doesn't get soupy.

The genius hack in this recipe: topping sweet potatoes with marshmallows while they're still piping hot from the slow cooker yields a baked marshmallow topping that's typical with baked sweet potato casseroles.

This gratin dish has all of the craveable flavors of artichoke dip in a more sophisticated form. It makes a terrific side with any roasted meats or poultry.

These hasselback sweet potatoes are like mini marshmallow-topped sweet potato casseroles drizzled with sage-infused butter. The hasselback technique, slicing the potato but leaving it whole, makes for a tender potato with a crispy top--the best of both worlds.

A slimmed-down white sauce makes this creamy green bean casserole side dish recipe low fat.