Crockpot Sweet Potatoes with Marshmallows: The Easiest, Coziest Holiday Side Dish You’ll Ever Make

If you’re searching for the ultimate comforting, crowd-pleasing, holiday-friendly side dish, Crockpot Sweet Potatoes with Marshmallows is exactly where you need to land. This creamy, buttery, cinnamon-kissed sweet potato recipe delivers everything we love about the classic Thanksgiving sweet potato casserole — but without the oven, without stress, and without babysitting a thing. The slow cooker handles everything for you, lending an unbelievably soft texture and rich flavor that only low-and-slow cooking can provide.

Whether you’re preparing for Thanksgiving, Friendsgiving, Christmas dinner, a fall potluck, or simply craving something warm and cozy on a chilly evening, this dish is the perfect answer. The marshmallows melt, toast, and blanket the sweet potatoes in a golden, gooey topping that tastes like nostalgia, comfort, and celebration all in one bite.

And best of all? It’s shockingly easy. Just peel, chop, toss into the crockpot, walk away, and return to a melt-in-your-mouth masterpiece.

⭐ Why This Crockpot Sweet Potatoes with Marshmallows Recipe Works

There are dozens of sweet potato casseroles and marshmallow-topped creations out there, but this slow-cooked version stands out. Here’s why home cooks love it:

1. Zero Oven Required

Your oven is already guaranteed to be overbooked during the holidays. This recipe frees up precious oven space while still delivering that traditional sweet potato-and-marshmallow goodness we all expect at Thanksgiving.

2. Slow Cooking Builds Deep Flavor

Instead of boiling sweet potatoes (which dilutes and drains flavor), cooking them in the crockpot lets them cook in their own natural sugars. The result? A richer, sweeter, naturally caramelized flavor that doesn’t require extra effort.

3. Foolproof for Beginners

Just chop, toss, season, and let the slow cooker do the work. There’s no technique required — no whisking eggs, no worrying about burning, no stirring.

4. Customizable Sweetness

You decide how sweet to make the dish. Keep it subtle for a more grown-up flavor, or go all-in with brown sugar, maple syrup, and marshmallows for dessert-level indulgence.

5. Perfect for Feeding a Crowd

Sweet potatoes stretch easily, and this recipe can be doubled in a 6- or 8-quart crockpot, making it the ultimate holiday side dish for gatherings.

🥘 Ingredients

Below are the essential ingredients for Crockpot Sweet Potatoes with Marshmallows. These simple pantry staples work together to create an irresistibly creamy and sweet finished dish.

For the Sweet Potatoes:

• 4–5 large sweet potatoes, peeled and chopped
  • ½ cup brown sugar
  • 4 tbsp melted butter
  • 1 tsp vanilla extract
  • 1 tsp cinnamon
  • ¼ tsp nutmeg
  • Pinch of salt
  • ¼ cup water or orange juice (optional but helps steam the potatoes)

For the Marshmallow Topping:

• • 2–3 cups mini marshmallows (or large marshmallows, halved)

📜 Instructions

1. Prep Your Sweet Potatoes

Peel and chop your sweet potatoes into even-sized chunks, about 1 to 1½ inches thick. This ensures even cooking and prevents mushy or undercooked pieces.

2. Build the Flavor Base

Add your sweet potatoes directly to the slow cooker. Pour in melted butter, brown sugar, cinnamon, nutmeg, vanilla, and a pinch of salt. Toss everything together to coat the potatoes well.

3. Add Liquid and Cook

Pour in ¼ cup of water or orange juice. This small amount of liquid helps the potatoes steam and soften instead of sticking.

Cover and cook on HIGH for 3–4 hours or LOW for 6–7 hours, until the sweet potatoes are incredibly soft.

4. Mash or Leave Chunky

Use a large spoon or potato masher to mash the sweet potatoes right inside the crockpot, or simply stir gently if you prefer a chunky texture.

5. Add the Marshmallows

Sprinkle mini marshmallows across the top of the sweet potato mixture. Leave them as a thick layer so they melt and brown beautifully.

6. Melt the Marshmallows

Cover and cook on HIGH for 10–15 minutes or until the marshmallows are gooey and softened.
If your crockpot lid is clear, you’ll see the magic happening — the marshmallows collapse into a glossy, irresistible topping.

7. Serve Warm and Enjoy

Scoop directly from the crockpot and watch your guests’ faces light up.

💡 Tips for the Best Crockpot Sweet Potatoes with Marshmallows

✔ Use fresh sweet potatoes — avoid canned; they become too mushy.
✔ Don’t skip the butter — it adds richness and helps the marshmallows melt smoothly.
✔ Add marshmallows at the end — adding too early will cause them to dissolve into the potatoes.
✔ Want a toasted top?
Briefly broil the marshmallow-topped potatoes in a casserole dish for 1–2 minutes.
✔ Avoid over-mashing — the potatoes should be creamy but not gluey.

🎨 Variations to Try

1. Pecan Crunch Version

Add a pecan crumble on top (pecans + brown sugar + butter) before adding the marshmallows.

2. Maple Sweet Potatoes

Replace brown sugar with maple syrup for a deeper flavor.

3. Spiced Holiday Blend

Add ginger, clove, allspice, or pumpkin pie spice for seasonal warmth.

4. Marshmallow Swirl

Stir some marshmallows into the potatoes before adding the top layer for double marshmallow goodness.

5. Vegan Version

Use vegan butter, coconut sugar, and vegan marshmallows — still deliciously gooey and sweet.

🍽️ Serving Suggestions

Crockpot Sweet Potatoes with Marshmallows pairs perfectly with:

• Roast turkey or chicken
• Glazed ham
• Beef roast
• Gravy-covered mashed potatoes and stuffing
• Fall salads
• Warm dinner rolls

AND it works beautifully as a dessert too — just scoop into bowls and add caramel drizzle.

🧡 Fun Facts About Sweet Potatoes

• Sweet potatoes aren’t actually potatoes; they’re root vegetables from the morning glory family.
• Marshmallow topping became popular in the early 1900s thanks to a marshmallow corporation promoting their product.
• Slow cookers enhance sweet potato flavor by allowing their natural sugars to slowly caramelize.
• Sweet potatoes are naturally rich in vitamin A, fiber, and antioxidants.

Crockpot Sweet Potatoes with Marshmallows

Creamy, buttery slow-cooked sweet potatoes topped with gooey toasted marshmallows for the easiest holiday side dish.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 4 hours hrs

Total Time 4 hours hrs 15 minutes mins

Servings: 8 servings

Course: Dessert, Snack

Cuisine: American, Autumn

Calories: 220

Ingredients

  

Cookie Batter

• 4-5 large sweet potatoes peeled and chopped
• 0.5 cup brown sugar
• 4 tbsp unsalted butter melted
• 1 tsp vanilla extract
• 1 tsp cinnamon
• 0.25 tsp nutmeg
• 1 pinch salt
• 0.25 cup water or orange juice

Filling

• 2-3 cups mini marshmallows

Equipment

• Mixing bowls
• Baking sheet
• Wire rack
• Hand mixer or stand mixer

Method

 

1. Peel and chop sweet potatoes into evenly sized chunks.
2. Add sweet potatoes to the crockpot with butter, brown sugar, cinnamon, vanilla, nutmeg, and salt. Toss to coat.
3. Add 1/4 cup water or orange juice. Cover and cook on HIGH for 3–4 hours or LOW for 6–7 hours.
4. Mash sweet potatoes lightly or leave chunky if preferred.
5. Top with marshmallows and cook on HIGH for 10–15 minutes until melted.
6. Serve warm straight from the crockpot.

Notes

For a toasted top, transfer to a casserole dish and broil for 1–2 minutes.