This is my go-to holiday side when I want something that tastes indulgent but doesn’t require me to hover by the stove. These Crock Pot candied yams are soft, syrupy, and warmly spiced, a comfort-food staple that I first discovered while testing make-ahead sides for a holiday potluck. I peeled four pounds of sweet potatoes on a blustery December afternoon, tossed them with a simple brown sugar-maple glaze, and left them to slow-cook while I finished other dishes. By the time the house smelled like cinnamon and caramel, everyone was already circling the kitchen.

The texture is the best part: tender, bite-sized pieces that hold their shape but practically melt against the fork. The glaze clings to each piece, becoming syrupy as it reduces in the slow cooker, and the marshmallows on top add that nostalgic, pillowy sweetness that grills to a light caramelized crust if you choose to broil them before serving. I love that it’s forgiving — if you’re running late you can keep them on warm for a while, and if you prefer a deeper caramel flavor you can finish them under a broiler for a few minutes.

Ingredients

• Sweet potatoes (4 pounds): Choose firm, unblemished sweet potatoes — garnet or Beauregard varieties work best. Peel and dice into roughly 1/2-inch pieces so they cook quickly and absorb the glaze evenly.
• Salted butter (1/2 cup): Use a European-style butter for a richer flavor if available. If you prefer a slightly less salty finish, use unsalted and add a pinch of salt to taste.
• Light brown sugar (1 cup, packed): Provides moisture and a deep molasses note. Light brown sugar keeps the glaze bright; dark brown will make it more molasses-forward.
• Maple syrup (1/2 cup): Real maple syrup adds complexity that complements the sweet potato. Grade A or amber works well; pancake syrup can be used in a pinch but flavor will be flatter.
• Ground cinnamon (2 teaspoons) and nutmeg (pinch): Warm, aromatic spices are key — freshly ground nutmeg is more aromatic than pre-ground if you have it.
• Vanilla extract (2 teaspoons): Adds a rounded sweet perfume that lifts the glaze and pairs beautifully with the maple.
• Mini marshmallows (10-ounce bag): The classic finish. For a vegan version, swap with vegan marshmallows or omit and finish under the broiler with a brown sugar crumble.

Instructions

Prepare the potatoes: Peel 4 pounds of sweet potatoes and dice them into roughly 1/2-inch pieces so they cook evenly. Place the diced potatoes in a large mixing bowl and set aside while you prepare the glaze; uniform size ensures consistent tenderness after 6–8 hours. Make the glaze: In a small saucepan, combine 1/2 cup salted butter, 1 cup packed light brown sugar, 1/2 cup maple syrup, 2 teaspoons ground cinnamon, and a pinch of nutmeg. Warm over medium-low heat, whisking until butter and sugar have melted and the mixture is smooth and slightly glossy. Remove from heat and whisk in 2 teaspoons vanilla extract. Heating briefly helps the sugar dissolve, producing a silky glaze that will coat the potatoes. Combine potatoes and glaze: Pour the warm glaze over the diced sweet potatoes and toss gently with a spatula to coat every piece. Scrape the bowl into the body of a 6-quart slow cooker that has been sprayed lightly with cooking spray to prevent sticking. Distribute potatoes in a single even layer so the heat circulates and the glaze reduces uniformly. Slow cook: Cover and cook on low for 6–8 hours or on high for 4–5 hours. Stir every 30–45 minutes for the first couple of hours to prevent any sugar from settling and burning on the bottom. The potatoes are done when they are fork-tender and the liquid has thickened into a syrupy glaze. If the glaze appears too thin near the end, remove the lid for the last 30 minutes to concentrate it. Add marshmallows: Stir in half of the 10-ounce bag of mini marshmallows so they partially melt into the hot syrup for added creaminess. Sprinkle the remaining marshmallows on top to create a fluffy layer. Replace the lid for a few minutes if you want them to soften, or proceed to broil for a toasted finish. Optional broil: For a browned, toasted top, transfer the slow-cooked potatoes to an oven-safe dish and broil on high for 1–3 minutes, watching closely so the marshmallows brown and do not burn. Remove when they are golden brown and puffy, then let rest a few minutes before serving so the glaze stabilizes.

Storage Tips

Cool leftovers to room temperature for no more than two hours, then transfer to airtight containers and refrigerate for up to 3 days. For longer storage, spread cooled pieces in a freezer-safe container and seal tightly; they will keep about 3 months. Reheat gently in a 325F oven until warmed through, or microwave individual portions in short bursts to avoid drying them out. If youve already added marshmallows before storing, note that their texture will change; consider storing marshmallows separately and topping just before reheating when possible.

Ingredient Substitutions

To make this dairy-free, use 1/2 cup plant-based butter; the mouthfeel will be slightly lighter but still rich. Swap maple syrup for an equal amount of honey if desired, though honey will alter the flavor profile. For vegan dieters, replace marshmallows with vegan marshmallows or omit entirely and finish with a crisp pecan and brown sugar crumble (mix 1/2 cup chopped pecans with 1/3 cup brown sugar and 2 tablespoons melted vegan butter, sprinkle and bake to toast). Reduce sugar by 1/4 cup for a less sweet side, but expect a thinner glaze.

Serving Suggestions

Serve these candied yams alongside roasted turkey, glazed ham, or smoked brisket; the sweet-spicy profile pairs especially well with savory mains and green vegetable sides like sautéed green beans or a crisp winter salad. Garnish with toasted pecans for crunch, a sprinkle of flaky sea salt to balance the sweetness, or a few fresh thyme leaves for an herby contrast. For a buffet, keep them in the slow cooker on warm and top with marshmallows just before serving to preserve the toasted texture.

Cultural Background

Candied yams are a classic American holiday side with roots in regional Southern traditions where sweet potatoes are prized. Historically, Sweet potatoes were prepared with sugar and spices to create a celebratory side, and the addition of marshmallows became popular in the early-to-mid 20th century after marshmallow manufacturing increased. The dish now spans many family traditions, appearing at Thanksgiving and Christmas tables across the country in numerous permutations from nut-studded casseroles to simpler glazed versions.

Seasonal Adaptations

In autumn and winter, enhance the recipe with a 1/4 teaspoon of ground ginger or a tablespoon of bourbon added to the glaze for warmth and depth. For spring and summer gatherings, cut back on brown sugar and increase maple syrup slightly for a lighter finish and top with a drizzle of citrus-infused honey and a scattering of fresh herbs. Holiday versions often include toasted pecans or walnuts and a pinch of ground cloves for a deeper spice profile.

Meal Prep Tips

Dice the sweet potatoes and store them submerged in cold water in the refrigerator up to 24 hours before cooking to save time. Make the glaze in advance and keep it refrigerated — rewarm gently before pouring over the potatoes. If preparing for a large dinner, slow-cook the yams that morning and hold on warm; add fresh marshmallows or briefly broil just before guests arrive to restore the toasted look. Label containers with date and reheating instructions for easy buffet planning.

These candied yams are a reliable, comforting side that invites improvisation. Whether youre serving a small family meal or a big holiday spread, they bring warmth, sweetness and plenty of nostalgia to the table — and theyre always one of the first dishes to disappear.