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The fall my youngest started kindergarten, I had this idea that I was going to be one of those mothers who baked on weekends. Real baking — pie crusts from scratch, the whole thing. That lasted about three Saturdays before I remembered I don’t actually enjoy making pie crusts and the kids didn’t care either way as long as dessert showed up.
What I did keep doing was these apples. I’d seen some version of the recipe in a church cookbook — the kind with the spiral binding and a casserole on every other page — and I tweaked it until it became mine. Foil packets, slow cooker, five ingredients, done. My daughter called them “treasure apples” when she was little because of the way you unwrap them, and I never corrected her because honestly that’s a better name than anything I would’ve come up with. She’s thirty-one now and she still asks for them at Thanksgiving.
Why you’ll love this recipe
- Only 5 ingredients — apples, butter, brown sugar, cinnamon, and raisins or walnuts. Nothing exotic, nothing to hunt down.
- Each apple is its own little packet — the foil traps the butter and spices inside so every bite is swimming in that caramel-cinnamon syrup.
- The smell alone is half the point — the house fills up within the first hour and it stays that way. Worth making just for that.
- Works as a weeknight dessert or a dinner party finish — plain from the foil on a Tuesday, or with vanilla ice cream when you want it to feel like something.
- Completely hands-off — there is genuinely nothing to do once the lid goes on.
A few thoughts on the ingredients
The apples are the only place where I’d say don’t wing it too much. You want something firm — Honeycrisp is my first choice, Granny Smith if you like a little tartness, Gala in a pinch. What you don’t want is a Red Delicious, which my mother bought exclusively and which I believe exists only to disappoint people. Anything too soft going in will be applesauce coming out, and while applesauce is fine, it’s not what we’re going for here.
Butter: softened, so it actually mixes with the sugar instead of sitting in chunks. I use unsalted out of habit, but I’ve grabbed the salted by mistake before and honestly — it might be slightly better. That little edge of salt against the brown sugar is not a bad thing.
Brown sugar: packed, light or dark. Dark gives you something deeper, almost molasses-y, and I’ve been reaching for it more often lately. Either works. I usually use about a tablespoon per apple, maybe a little more if I’m feeling generous, which I almost always am with brown sugar.
Raisins or walnuts for the filling — I use raisins when I’m making these for grandkids and walnuts or pecans when it’s adults. Pecans especially are wonderful here; they get this buttery, almost praline quality from the brown sugar. One year I used dried cranberries and chopped pecans together — sometime around Thanksgiving, 2019 maybe, or the year before — and I’ve been meaning to do it again ever since.
Ingredients
- 6 medium firm apples — Honeycrisp, Gala, or Granny Smith
- 6 tablespoons unsalted butter, softened
- 6 tablespoons packed brown sugar, light or dark (I sometimes add a little extra, I won’t pretend otherwise)
- 1½ teaspoons ground cinnamon
- ¼ cup raisins or chopped walnuts — roughly 2 teaspoons per apple, eyeballed
How to make them
Tear off six pieces of heavy-duty foil, each one big enough to wrap an apple with a few extra inches to pinch closed at the top. If you’re working with regular foil, double it up — I once used a single thin sheet and the packet split open halfway through cooking and the butter pooled at the bottom of my slow cooker and burned just enough to be annoying. Heavy-duty is worth buying a box of.
Core each apple from the top down, stopping before you go all the way through. You’re making a well for the filling, not a tunnel. If the bottom opens up, everything good drains straight out. I use a melon baller for this because my apple corer has been missing since approximately 2017 and at this point I’ve stopped looking.
Stir the butter, brown sugar, and cinnamon together until you have a thick paste — it’ll be sandy and a little crumbly, which is exactly right. Stand each apple on a sheet of foil, spoon the filling down into the core, tuck in your raisins or nuts, then add whatever butter mixture is left on top. Bring the foil up around the apple and pinch it firmly at the top. Snug, not crushed. You’re making a sealed packet so the steam stays inside and does the cooking.
Stand them upright in the slow cooker, close enough together that they lean on each other a little. Don’t add water to the bottom — you don’t need it and it makes everything soggy. Put the lid on.
Cook on LOW for three and a half to four and a half hours. I know that’s a wide window and I’m sorry, but it genuinely depends on your apples and your slow cooker. My current one runs a little hot; my old one ran cold; I’ve had the same recipe take three hours in one and five in another. Start checking around three hours by pressing a knife through the foil — it should meet some resistance but go through without much force. Tender but not collapsed.
When they’re done, turn off the slow cooker and leave the lid ajar for ten minutes before you open any packets. The juice inside is extremely hot — I’m not being dramatic — and if you tear into the foil immediately it will steam your hand and spill everywhere. Open them away from your face. Peel the foil back slowly. This is the moment that got my daughter to start calling them treasure apples, and I think about that every single time.
Ways to change it up
If you’re serving these to adults and you have a bottle of bourbon open, add about a teaspoon to each apple before wrapping. It kind of disappears into the filling during cooking but leaves a quiet warmth underneath everything that’s really lovely on a cold night. Apple brandy does the same thing if that’s what you’ve got.
Maple syrup instead of brown sugar is a version I’ve tried a few times and liked — drizzle it over the butter in each apple, maybe two teaspoons per. Less sweet, a little more complex, slightly thinner syrup. It’s a good variation if the brown sugar version starts feeling too rich.
A pinch of nutmeg in the butter mixture is nice. Just a pinch. I’ve also done cardamom once — just a small amount — which sounds fussy but was actually really good, though I’ve never been able to get it quite right again so maybe it was an accident.
If you want to cut back on butter, you can use three tablespoons total spread across all six apples instead of one per apple. The filling will be drier, less saucy. Still fragrant and good, just more modest. I make them that way sometimes when we’ve already had a heavy dinner and I don’t want anyone to feel like they need to unbutton something.
Leftovers
Leave them in their foil packets in the fridge — it sounds lazy but it’s actually the right call, keeps the apple from drying out and the juices contained. Good for two, maybe three days. Reheat in a low oven or back in the slow cooker.
The syrup that collects at the bottom of the foil is honestly the best part of leftovers — spoon it over oatmeal the next morning. I started doing this by accident once when I had half a packet left over and didn’t want to waste it, and now I sometimes make these specifically so I’ll have that syrup for breakfast the next day, which probably says something about me.
Serve them in shallow bowls so the syrup has somewhere to go. Ice cream if you want it to feel special. Whipped cream from a can is perfectly acceptable and I won’t hear otherwise. Or just a spoon and ten minutes of sitting quietly at the kitchen table before the evening gets away from you.
Slow Cooker Foil-Wrapped Baked Apples
Ingredients
- 6 medium apples firm varieties such as Honeycrisp, Gala, or Granny Smith
- 6 tbsp unsalted butter softened
- 6 tbsp brown sugar packed
- 1 1/2 tsp ground cinnamon
- 1/4 cup raisins or chopped walnuts about 4 teaspoons per apple
Instructions
- Prepare six large sheets of heavy-duty aluminum foil, each large enough to wrap an apple completely.
- Wash and dry the apples, then carefully core each one while keeping the bottom intact.
- In a small bowl, mix the softened butter, brown sugar, and cinnamon until it forms a thick paste.
- Place one apple in the center of each foil sheet and fill the hollow center with the butter-sugar mixture and raisins or walnuts.
- Wrap each apple tightly in foil, sealing the top so the juices stay inside.
- Place the foil-wrapped apples upright in a snug single layer in the slow cooker.
- Cover and cook on LOW for 3 1/2 to 4 1/2 hours until the apples are very tender.
- Let the apples rest for about 10 minutes before carefully opening the foil packets.
- Serve warm, spooning the cinnamon butter sauce from the foil over the apples.