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Three ingredients, one Slow Cooker, and zero oven required. These candied sweet potatoes come out tender and caramel-y, swimming in a thick glossy syrup that tastes like the best part of sweet potato casserole — with almost no effort at all.
Why You’ll Love This
Only 3 ingredients — sweet potatoes, brown sugar, and butter. That’s it.
No oven needed — the Slow Cooker does all the work while you go about your day.
That syrup. It forms completely on its own and is thick, glossy, and tastes like caramel.
Works for any occasion — weeknight dinner side or a holiday table, the reaction is the same.
Easy to scale — bump up the quantities slightly and it feeds a crowd without any extra effort.
About the Ingredients
The sweet potatoes: smaller to medium ones work better here because they fit in a more even layer and cook more consistently. I’ve used the really enormous ones before and they were fine, I just had to cut them in half crosswise, which felt like a defeat somehow. I don’t know why. They tasted exactly the same.
Brown sugar: I use dark brown most of the time because I like that molasses edge, but light brown is perfectly lovely too. I’ve used both within the same month and it’s not like one version haunts you.
Butter: just regular unsalted. A plant-based butter works fine here too. Won’t be exactly the same but it’s close enough that nobody’s going to be sad about it.
That’s it. Three things.
Ingredients (serves about 6)
3 pounds sweet potatoes, peeled and left whole — small to medium are really best here
1 cup packed brown sugar (light or dark, honestly your call)
½ cup unsalted butter — that’s one stick — cut into pieces
How to Make It
Peel the sweet potatoes and leave them whole. I know that feels a little strange if you’re used to cutting everything up before it goes into a Slow Cooker, but trust it. They hold together better, they look nicer when you serve them, and the texture at the end is softer and more cohesive than when they’ve been chunked.
If any of your potatoes are truly enormous — like, the size of a small animal — trim the ends or cut them in half crosswise so they fit. You want them sitting mostly in one layer on the bottom of a 5- or 6-quart Slow Cooker. Snug is fine. Crammed in there like a Tetris situation is less fine.
Sprinkle the brown sugar over the top. Let it fall down around the sides a little. Then dot the butter pieces over everything — I do maybe eight or ten pieces distributed across the surface. It doesn’t have to be precise. None of this has to be precise. That’s the whole point.
Put the lid on. LOW for five to six hours, HIGH for two and a half to three. I almost always do LOW because I like starting it in the morning and just forgetting about it. There’s something very satisfying about walking back into the kitchen three hours later and being hit with that smell.
When they’re done, the potatoes will be very soft when you poke them with a fork and the sugar and butter will have become a thick syrup at the bottom. Spoon some of it over the tops of the potatoes. If you can give them ten or fifteen minutes on WARM with the lid on, the syrup clings a little better. But if you’re hungry and dinner is ready and people are hovering, just serve them.
Whole, sliced, doesn’t matter. Spoon a lot of syrup over each portion. More than you think you need.
Variations
A version with coconut oil works fine if you’re keeping it dairy-free — it adds a subtle tropical note that’s actually kind of interesting with pork. I wouldn’t do it for Thanksgiving. But for a regular Sunday dinner in summer, sure, maybe.
Half a teaspoon of cayenne stirred into the sugar before you sprinkle it is worth trying. The heat cuts through the sweetness and there’s this little surprise at the back of your throat. I can see what it’s going for — I just can’t decide if I like it or if it bothers me. Maybe I’ll land somewhere eventually.
If you’re cooking for more people, you can go up to four pounds of sweet potatoes — bump the sugar to about a cup and a quarter and the butter to three-quarters of a cup. Just make sure your slow cooker is big enough that the potatoes can still sit mostly in one layer. A six-quart handles four pounds fine.
Storage & Reheating
These keep really well. Refrigerate the leftovers in a container with the syrup — do not drain it off, that’s the whole thing — and they’ll be good for four days, maybe five if you’re not too precious about it.
Reheat gently on the stovetop or in the microwave, spooning the syrup over as they warm up. I’ve eaten cold leftover candied sweet potato straight from the container at 11 p.m. and I don’t regret it. I’ve also sliced them up the next morning over oatmeal with a little of the syrup drizzled on top and that’s genuinely a good breakfast, better than it sounds.