Candied Sweet Potatoes in Slow Cooker with Brown Sugar

Glazed candied sweet potatoes with a glossy amber syrup and a hint of cinnamon in a white ceramic baking dish.
Candied Sweet Potatoes for 8 Servings
By Emily Carter
The low heat allows the sugars to concentrate into a thick syrup that clings to each slice. This method for Candied Sweet Potatoes in Slow Cooker removes the need to watch an oven for hours.
  • Time: 10 min active + 6 hours cooking
  • Flavor/Texture Hook: Deep mahogany glaze and toasted marshmallows
  • Perfect for: Holiday side dishes or a cozy Sunday dinner

Candied Sweet Potatoes in Slow Cooker

The smell of bubbling brown sugar and cinnamon fills the whole house when this dish hits the 5 hour mark. It's a warm, cozy aroma that tells everyone dinner is almost ready. There's something about the way the syrup thickens in the pot that just feels like home.

I'll be honest, my first few attempts were a disaster. I used to just dump everything in without thinking about the cut of the potato, and I ended up with a sweet potato porridge. I learned the hard way that uniform slices are the only way to avoid that mushy mess.

Now, this is my dependable go to. Using Candied Sweet Potatoes in Slow Cooker as my base, I've found that a slow and steady heat creates a rich, syrupy consistency that you just can't get with a quick boil. It's a set it and forget it win that tastes like it took all day.

Why the Sugar Gets Sticky

  • Brown Sugar Molasses: The molasses in brown sugar creates a thicker, more viscous syrup than white sugar. It binds to the potato starch as it reduces.
  • Low Temperature: Slow cooking prevents the sugar from burning while allowing the water in the potatoes to evaporate, which concentrates the glaze.

The difference between using fresh tubers and pre cut shortcuts often comes down to the starch content.

MethodPrep TimeTextureBest For
Fresh Sliced10 minsHolds shape wellTraditional holiday meals
Pre cut/Frozen2 minsSofter, more porousQuick weeknight sides

Quick Recipe Details

This recipe is designed for a standard 6 quart slow cooker. Since we're using a budget smart approach, I've focused on staples you likely already have in your pantry. Trust me, don't bother with the expensive "fancy" organic sugars here, as the melted butter and maple syrup provide all the richness you need.

What Each Ingredient Does

IngredientRoleIf You Don't Have It
Sweet PotatoesMain base and starchYams (very similar result)
Brown SugarSweetness and colorMaple sugar or coconut sugar
Unsalted ButterRichness and glossCoconut oil (adds slight nuttiness)
Maple SyrupDepth and viscosityHoney (slightly more floral)

The sweet potatoes used here are the orange fleshed variety. In most grocery stores, there is no difference between them and yams, as stores often label sweet potatoes as yams. The Difference Between Yams and Sweet Potatoes explains that true yams are starchier and less sweet.

Essential Kitchen Tools

No specialized equipment is required for this recipe. All you really need is a standard slow cooker and a sharp knife. I prefer using a whisk for the glaze to ensure the cinnamon and nutmeg are well blended and clump free.

Chef Note: Even if your slow cooker has a searing feature, avoid browning the potatoes first. The magic is in the slow simmered glaze, and searing can often make the edges too tough for this particular style.

How to Cook This Dish

Vibrant orange potato chunks coated in a shimmering gold glaze, served on a white platter with fresh parsley.
  1. Peel the sweet potatoes and cut them into uniform 1/2 inch slices. Note: Keeping the thickness consistent ensures the potatoes cook evenly without some turning to mush.
  2. Coat the bottom of the slow cooker with 1 tbsp neutral oil.
  3. Layer the potato rounds in the slow cooker, overlapping slightly to maximize the space.
  4. In a medium sized bowl, whisk the melted butter, brown sugar, maple syrup, cinnamon, nutmeg, salt, and pepper together.
  5. Pour the glaze evenly over the sweet potato slices.
  6. Cover and cook on Low for 6 hours until the potatoes are tender when poked with a fork and the sauce has a deep mahogany hue.
  7. Transfer the potatoes and the syrup into a baking dish.
  8. Scatter 2 cups of mini marshmallows across the top.
  9. Broil for 2-3 minutes until the marshmallows are golden, bubbly, and toasted.

Fixing Common Issues

If the sauce looks too thin, it's usually because the lid was lifted too many times, letting the steam escape too quickly. The heat needs to stay consistent to reduce the syrup.

Potatoes Are Too Mushy

This happens when slices are thinner than 1/2 inch or if the heat was too high. Ensure a thick, consistent cut to maintain a velvety texture.

Sauce Is Too Thin

If the syrup is watery, you can simmer it in a saucepan for 5 minutes after cooking to thicken it before adding the marshmallows.

Marshmallows Burned

Broilers vary wildly. Keep a close eye on them; they go from golden to charred in about 10 seconds.

ProblemFix
Mushy PotatoesSlice thicker (1/2 inch)
Watery SauceReduce in a pan for 5 mins
Burnt ToppingWatch broiler closely

Best Pairing Ideas

Since these are quite sweet, you want salty or acidic sides to balance the plate. I love serving these alongside a roast chicken or a glazed ham. If you're planning a big spread, these pair well with some grape jelly meatballs for the appetizer table.

For a full Southern style feast, add some collard greens and cornbread. The bitterness of the greens cuts right through the sugar of the Candied Sweet Potatoes in Slow Cooker.

Storage and Leftover Tips

Keep any leftovers in an airtight container; they will remain fresh if chilled for 3 to 4 days. When reheating, I recommend a microwave with a splash of water or a small oven safe dish with a bit of extra butter to keep the glaze from becoming too sticky.

The cooked potatoes (without the marshmallows) can be frozen for up to 2 months. Let them defrost in the refrigerator overnight before warming them up. To minimize waste, don't discard your potato peels.

Toss them in a little oil and salt, then air fry at 400°F for 10 minutes for a quick snack.

Different Flavor Ideas

For a subtle twist, incorporate a small amount of cayenne pepper into the glaze. This adds a layer of depth without making the dish spicy, preventing it from feeling like a dessert.

For a plant based version, use a premium vegan butter alternative and a maple based sweetener. This preserves the rich finish remarkably well. For a bit more zest, a squeeze of fresh orange juice in the glaze adds a bright, citrusy note.

If you enjoy contrasting flavors, this sweetness is a great follow-up to a savory and spicy meal, such as a chicken tortilla soup, eaten earlier in the day.

Adding a Crunch

Substitute the marshmallows with chopped walnuts or pecans. Toast them in a pan for 3 minutes first, then sprinkle them on just before serving.

Choosing Your Sweetener

Honey or agave can be used in place of maple syrup. Just keep in mind that honey is slightly more potent and can overshadow the cinnamon if you use too much.

Common Cooking Myths

Searing potatoes "seals in" the flavor. This isn't true. Searing adds a crust, but the flavor in this dish comes from the slow absorption of the sugar glaze.

You must use yams for a Southern style. As mentioned, most "yams" in US stores are just orange sweet potatoes. Both work for this recipe.

Scaling the Recipe

Adjusting the Portion (Half Batch): Use 1.5 lbs of potatoes and cut the glaze ingredients in half. If you have a smaller slow cooker, use it; otherwise, start checking for doneness 1 hour sooner since a smaller amount may cook more quickly.

Adjusting the Portion (Double Batch): Increase the potatoes to 6 lbs. To keep the flavors balanced, only increase the cinnamon and salt to 1.5x instead of doubling them. A large 7-8 quart slow cooker is necessary to prevent crowding, which ensures the potatoes glaze properly instead of steaming.

GoalWhat to change
More TangAdd 1 tsp lemon juice
Nuttier TasteAdd 1/2 cup chopped pecans
Less SweetReduce brown sugar by 1/4 cup

Recipe FAQs

Is it true raw sweet potatoes cannot be used in a slow cooker?

False. They cook perfectly from raw when sliced into uniform rounds.

Tip: peel and slice them to 1/2 inch thickness to ensure they cook evenly.

How to get a thick, syrupy glaze?

Whisk melted butter, brown sugar, maple syrup, cinnamon, nutmeg, salt, and pepper before pouring the mixture over the potatoes.

Tip: wait until the sauce reaches a deep mahogany brown before adding marshmallows.

Are candied yams and sweet potatoes actually different?

They are often used interchangeably in recipes, though they are technically different root vegetables.

Tip: stick to the 3 lbs of sweet potatoes listed for the intended texture.

How long should the pot stay on low heat?

Cook for 6 to 8 hours until the potatoes are fork tender.

Tip: use the high setting for 3 to 4 hours if you need them faster.

Which potatoes work best for this recipe?

Sweet potatoes are a perfect option due to their natural sweetness and creamy consistency. If you appreciated this low-and-slow approach, you can apply a similar method to our tender Boston Butt recipe.

Tip: cut the rounds evenly so they all cook at the same rate.

Can marshmallows be added before the slow cooker finishes?

No, because they would melt into the sauce instead of browning.

Tip: transfer the potatoes to a baking dish and broil for 2 to 3 minutes for a toasted top.

What is the best way to reheat leftovers?

Use a microwave with a splash of water or an oven dish with a tiny bit of extra butter.

Tip: this keeps the glaze from becoming too sticky during heating.

Do these always turn into mush if cooked for 8 hours?

This one's false: consistent 1/2 inch slicing ensures they hold their shape even during long cook times.

Tip: lightly grease the bottom of the slow cooker with neutral oil to prevent sticking.

Candied Sweet Potatoes Slow Cooker

Candied Sweet Potatoes for 8 Servings Recipe Card
Candied Sweet Potatoes for 8 Servings Recipe Card
Preparation time:10 Mins
Cooking time:06 Hrs
Servings:8 servings
Category: Side DishCuisine: American
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Ingredients:

Instructions:

Nutrition Facts
Per serving
Calories
424
% Daily Value*
* Percent Daily Values are based on a 2,000 calorie diet.
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