U.S. President Barack Obama holds up a sweet potato next to his daughter Sasha and first lady Michelle Obama at Capital Area Food Bank in Washington, Nov. 21, 2012. Reuters

Thanksgiving dinner wouldn't be complete without something sweet on the table, but you don't have to wait for the dessert course to indulge. Sweet potatoes and yams are the secret to looking like a responsible adult consuming mature side dishes on Thanksgiving while actually shoving mounds of marshmallow in your mouth.

The hardest part is deciding whether to cook yams or sweet potatoes, or both. Below are eight fun recipes for your holiday meal.

Sweet Potatoes with Toasted Marshmallow Swirls: Roast your potatoes and then make then fancy with this recipe from Tyler Florence that calls for piping swirls of homemade marshmallow on top.

Mashed Sweet Potatoes with Greek Yogurt: Craving creamy potatoes? This yogurt-friendly dish is your new BFF.

Candied Yams: Use this slow cooker recipe and save space in the oven.

Brown Sugar-Glazed Sweet Potatoes with Marshmallows: Marshmallows and almonds? Yes, please.

Sliced Sweet Potato Pie: Make your guests thankful for your cooking with this streusel-topped treat.

Sweet Potato Fries with Brown-Butter Marshmallow Sauce: Only Martha Stewart could get us excited about dipping fries in marshmallow sauce.

Sweet Potato & Apple Gratin: Butter and gingersnap crumbs are the keys to pulling this Rachel Ray recipe off.

'Ol No. 7 Yams: Paula Deen has made a lot of people angry, and overweight, over the years, but her recipes usually hit the spot.