What would Thanksgiving dinner be without potatoes, both regular and sweet? These recipes transform humble spuds into scene-stealing side dishes. To add a decadent touch to sweet potato fries, we suggest pairing them with a marshmallow sauce. (It can be made up to one day in advance.)

A simple way to upgrade your typical Thanksgiving mashed potatoes? Just add sour cream.

Bacon combines with sweet potatoes and spices to offer a deeply flavorful dish.

The genius of this Yukon potato concoction? It can be booked right alongside your turkey during its last hour and a half in the oven.

Add bright color to the table with this dish (that couldn't be simpler to prepare).

Stack russet potato slices in buttered muffin tins and top with cream to create individual servings of golden-brown gratin. The recipe serves six but is easy to double.

No need to peel and dice to prepare this dish: Simply roast the sweet potatoes and scoop out the flesh. Blend in the food processor with maple syrup and butter and -- voila -- you're done.

Sauteed leeks add savory flavor to layers of cream-kissed scalloped potatoes and the shredded Gruyere topping becomes browned and bubbly in the oven.

Buttermilk in place of cream adds tangy flavor instead of fat to classic mashed potatoes. Garnish with snipped fresh chives.

This traditional Thanksgiving casserole of creamy, nutmeg-seasoned sweet potatoes topped with toasty melted marshmallows is a classic crowd-pleaser. The dish travels well; simply reheat in the oven before serving.

Wedges of sweet potato are tossed with orange juice and brown sugar, which create a caramelized coating in the oven. Garnish this easy Thanksgiving side dish with orange zest.

The quintessential potato gratin is a simple, rich concoction of thinly sliced potato layers baked in a generous helping of cream with a crusty golden brown top. Enjoy the simplicity of the original or add crispy chopped bacon, sauteed mushrooms, or fresh thyme.

Sweet potatoes have a natural affinity for bourbon and brown sugar. This simple side dish can be roasted in the oven right along with the Thanksgiving turkey

Hearty quantities of butter and cream make these mashed potatoes well-suited to a special occasion like Thanksgiving. Mix in sauteed garlic or chopped fresh parsley to take them up another notch.

A simple mixture of butter, brown sugar, and pecans creates a glaze for roasted sweet potato slices. Just a pinch of cayenne pepper balances out the buttery sweetness.

To make these simple twice-baked potatoes, scoop out the flesh of baked potatoes and mash with butter, chives, and plenty of sour cream. Re-fill the potato skins with the creamy mixture, then bake until browned and slightly crispy.

Yukon gold potatoes are mashed along with sweet potatoes in this casserole, adding structure and cutting the sweetness a bit. Fresh sage and a crunchy breadcrumb topping add texture and savory notes.

The combination of cream cheese, milk, and heavy cream in this recipe from Martha's mom, Mrs. Kostyra, produces one of the richest and most velvety versions of mashed potatoes we've ever had.

Sweet potatoes get the savory treatment, tossed in olive oil, garlic, thyme, and crushed red pepper. The potatoes are roasted until tender and slightly caramelized, creating a wonderfully balanced sweet-savory side dish.

This creamy casserole of fragrant fennel and russet potatoes is a sophisticated alternative to traditional scalloped potatoes. Asiago cheese is scattered over the potatoes during the final 15 minutes of baking to create a flavorful, crispy-chewy topping.

This dressed-up version of the Thanksgiving favorite features a caramelized apple topping in place of the usual marshmallows. Butter, cream, and grated fresh ginger make the whipped sweet potatoes irresistible.

Thinly sliced russet potatoes and shallots are arranged decoratively and baked until golden-brown and tender. Bake this Thanksgiving side dish in a well-seasoned cast iron skillet to make the potatoes extra brown and crisp.

The buttery flesh and honeyed flavor of sweet potatoes make them enjoyable simply mashed. Butter, half-and-half, and a little brown sugar add a special-occasion touch for Thanksgiving.

Roasted garlic brings its rich, slightly sweet flavor to these mashed potatoes. This dish can be made up to 4 hours in advance of the Thanksgiving dinner: simply cover the mashed potatoes with a thin layer of milk and store in the refrigerator. To serve, heat over simmering water, stirring to combine.

Give classic twice-baked potatoes a Thanksgiving twist by using sweet potatoes. Blend the potato puree with cottage cheese for lightness and sage for earthy fragrance before stuffing back into skins. Garnish with chopped pecans.

The maple-syrup glaze adds a gently sweet fall flavor to this simple roasted potato recipe. It requires only last-minute preparation and is easy enough to tackle no matter how many items are on your Thanksgiving menu.

This rich, pudding-like casserole of whipped sweet potatoes, honey, milk, eggs, and warm spices is a Thanksgiving interpretation of classic, cornmeal-thickened Southern spoon bread. Serve it in place of the usual sweet potato casserole.

Sliced potatoes and sauteed wild mushrooms are layered with Gruyere and Parmesan cheeses in this savory gratin. This dish can be assembled and baked the day before Thanksgiving, and reheated just before serving.

Shredded Parmesan cheese and caramelized onions glazed in balsamic vinegar make a lusciously savory topping for simple baked sweet potatoes. This sophisticated dish takes very little hands-on preparation time, since there's no need to peel the potatoes.

Yukon Gold potatoes and sweet butternut squash are simmered together and simply mashed with butter and half-and-half. It's a new combination of favorite Thanksgiving ingredients that everyone will love.

Creamy, garlic-studded scalloped potatoes make a perfect addition to the Thanksgiving table. This recipe is from "Entertaining" by Martha Stewart.

Red-skinned potatoes, tossed in olive oil, fresh rosemary, and pepper, are roasted for an easy Thanksgiving side dish. If you prefer, thyme can be substituted for rosemary.

Add bright, tangy flavor to classic Thanksgiving mashed potatoes with capers and lemon zest. Chopped parsley adds freshness and color.

Pears add their juicy, buttery character to roasted sweet potatoes. A blend of dry mustard, ginger, and cayenne adds heat to this unique Thanksgiving side dish.

Mashed potatoes get creamy richness from butter, cream cheese, and sour cream, but the goodness doesn't stop there. Grated onion, chopped fresh chives, cheddar cheese, and crumbled bacon are stirred in before baking in the oven with extra cheese on top.

Lime juice and cayenne pepper add eye-opening flavor to the brown sugar glaze on these sweet potato wedges. This easy side dish is prepared on the stove top, leaving more room in the oven for the Thanksgiving turkey.

A whole head of garlic is boiled right along with the potatoes, softening its flavor to a rich sweetness. Substitute cream for some of the milk in this recipe to make it extra luxurious.

This interpretation of a classic French dish, potatoes Anna, adds slices of rutabaga, garlic, and fresh thyme to the customary potatoes and butter. This elegant side dish can be made ahead of time and reheated in the oven before Thanksgiving dinner.

Thin slices of sweet potato replace the pasta in this vegetarian Thanksgiving dish inspired by stuffed cannelloni. The sweet potato slices are rolled around mashed sweet potato and diced apple, topped with shaved Parmesan and toasted walnuts.

Celery root brings fresh flavor to these creamy mashed potatoes. Serve this side dish in place of regular mashed potatoes as a creative addition to the Thanksgiving menu.