Toss-Together Side Dish Casseroles

Layer upon layer of golden butternut squash, fresh leeks, and creamy cheese sauce take the humble potato to new heights. Make this side-dish gratin even easier by slicing the veggies a day in advance.

This gorgeous layered veggie dish uses purple potatoes and cauliflower instead of white, so it's even more enticing on your dinner table. A sprinkle of breadcrumbs and a few sprigs of thyme are the cherry on top of this creamy side.

Baked potatoes get easier and cheesier in this new potato casserole. Fresh baby spinach makes this side dish even more veggie-filled, while plenty of melty Swiss cheese adds a taste of indulgence.

Give your usual baked sweet potatoes a little extra spice by seasoning with cinnamon and nutmeg. And if you want to add some fire to these tender potato bites, garnish with sliced jalapeno peppers.

Creamy corn casserole is definitely a crowd favorite, and this lightened-up recipe is no exception. You can still toss together this corn casserole in 15 minutes, but we made it a little healthier by using fat-free milk and whole corn kernels.

That's right, we turned your favorite summer sandwich into a quick and easy casserole recipe that you can scoop up by the spoonful. The secret ingredient? Crunchy kettle chips!

Give potato gratin a healthy veggie boost by adding in fresh cabbage. But don't worry, this dish is still plenty creamy thanks to whipping cream and butter, plus it has a crunchy, golden-brown breadcrumb topping.

Your mashed potatoes are getting a major upgrade. We mixed in spinach, butter, sour cream, and cheddar cheese to make this side dish casserole better than any bowl of mashed potatoes you've prepared before. If you're a real cheese lover, sprinkle a little extra cheddar on top before serving.

If you're looking for a taste of rich, cheesy casserole goodness, this side is for you. Super creamy and loaded with spinach, this easy dish goes great with a lighter entree.

Make this vegetable side dish a day early to save time when prepping your entree. Crisp turnips, onions, and greens pair with a cheesy cream sauce before getting topped with crisp-crunchy bread crumbs.

Treat guests to individual side-dish casseroles with these five-ingredient potpies. Frozen veggies combine with condensed soup before getting a hearty topping of refrigerated mashed potatoes and melty cheddar cheese.

Quinoa is a healthy alternative to rice that packs tons of protein and fiber into your casserole recipe. Elevate the goodness of the grain-of-the-moment with marinara sauce, a few pantry herbs, mozzarella cheese, and fresh grape tomatoes.

With just five ingredients, this simple veggie side dish is perfect for even your busiest days. Follow the recipe to feed a crowd, or halve the ingredients and spoon the vegetable mixture into a 2-quart baking dish for a small get-together.

Treat your family to a healthy side of grains and a hearty helping of veggies with this pesto-flavored casserole. After cooking your rice, simply blend with five types of vegetables and a white wine sauce, then bake to perfection.

Upgrade your side of sweet potatoes with an indulgent Fontina cheese cream sauce and a sprinkle of fresh thyme or rosemary. The easy side-dish casserole takes just 15 minutes to prep.

Five ingredients are all it takes to put together this favorite potluck casserole. A silky blend of condensed soup, sour cream, and cheddar cheese coats frozen hash browns and roast chicken before slow-cooking into a blissfully bubbly side dish.

Bread crumbs with tender sweet onions top this casserole instead of the traditional high-fat fried onion rings. Serve the healthy side dish with roasted chicken.

Classic mac 'n' cheese makes an easy pasta side dish thanks to a few convenient pantry ingredients. Skip the time-consuming white sauce traditional to macaroni and prep your pasta with a creamy combination of evaporated milk and condensed soup.

No dinner would be complete without a hearty scoop of potatoes. Keep frozen hash browns light yet creamy with reduced-fat ingredients like sour cream, condensed soup, and cheddar cheese.

Polenta, Italian cheese, two kinds of beans, and a rainbow of vegetables simmer with garlic and basil pesto to create this delicious vegetarian dish. The colorful side cooks in your slow cooker so you can prepare your entree with ease.

Frozen corn gets a creamy makeover with the help of cream cheese and fresh red pepper. Baked until bubbly, the easy corn casserole pairs well with roasted chicken or turkey.

Build an easy, satisfying side-dish casserole around frozen chopped spinach. Bold Havarti cheese makes the bubbly vegetable casserole as delicious as its meaty counterparts.