Chocolate peppermint fudge made in a slow cooker: no thermometer, no soft-ball stage, no beating, and almost nothing that can go wrong.
Ten minutes of work, ninety minutes of melting, and one to two hours in the fridge to set.
Why This Recipe Works
- Sweetened condensed milk is doing the job a boiled sugar syrup would do in traditional fudge. It arrives at the right concentration already, which is why this needs no thermometer.
- Two tablespoons of butter give the fudge its gloss and a softer bite. Without it the set is harder and duller.
- A quarter teaspoon of fine sea salt in three cups of chocolate and a can of condensed milk is small and structural — it is what stops the fudge tasting flatly sweet.
- Candy canes both folded in and pressed on top gives two textures: the ones inside soften slightly into the fudge and the ones on top stay sharp and crunchy.
Fudge Without a Thermometer
Traditional fudge is a sugar syrup boiled to the soft-ball stage and then beaten as it cools. None of that happens here, and five decisions are what make the shortcut work.
The base
Sweetened condensed milk, not milk and sugar
Condensed milk is already a concentrated sugar solution with the water largely removed, which is what a boiled syrup would have produced. It is the single substitution that removes the thermometer from the recipe.
The heat
Low, for 60 to 90 minutes
A slow cooker on Low cannot get hot enough fast enough to scorch chocolate the way a pan does. This is the second half of the shortcut — the method that makes an unattended melt safe.
The lid
A clean towel underneath it
Condensation is the enemy. Water dripping into melting chocolate makes it seize into a grainy paste, and a slow cooker lid drips continuously.
The first 30 to 40 minutes
No stirring at all
The chips need to soften through before anything is moved. Stirring solid chocolate through hot condensed milk drags it around rather than melting it, and the friction is one route to a grainy set.
The extracts
Added with the heat OFF
Peppermint extract is volatile and alcohol-based. Stirred into a pot still on heat, a good part of the aroma leaves with the steam — which is why step 4 turns the cooker off first.
Ingredient Notes
- Semi-sweet chocolate chips
- Three cups, 510g. Semi-sweet against a full can of sweetened condensed milk is the balance — milk chocolate here would be cloying.
- Sweetened condensed milk
- One 14 oz can. Not evaporated milk, which is unsweetened and would give you a sauce rather than a fudge.
- Peppermint extract
- One to one and a half teaspoons, to taste. The range is real — peppermint extracts vary in strength and it is easy to overshoot.
- Crushed candy canes, divided
- Three quarters of a cup, split between an optional quarter cup folded in and the rest pressed on top.
How to Make It
Line the pan
Line an 8-inch square pan with parchment, leaving an overhang for easy lifting.
Start the melt
Add the chocolate chips, sweetened condensed milk, butter and salt to the slow cooker. Cover and cook on Low for 1 to 1 1/2 hours, with a clean kitchen towel under the lid to catch condensation.
Stir, from 30 to 40 minutes in
After the first 30 to 40 minutes, stir every 15 minutes until the mixture is fully melted, glossy and smooth — about 60 to 90 minutes in total.
Flavour it off the heat
Turn off the heat and stir in the vanilla and peppermint extract to taste. Fold in 1/4 cup of the crushed candy canes if you like.
Pan and top it
Scrape the fudge into the prepared pan and smooth the top. Sprinkle the remaining crushed candy over and press gently to adhere. For a white chocolate drizzle, melt the white chips and flick them over the surface.
Set and cut
Chill until set, 1 to 2 hours. Lift out with the parchment and cut into 36 small squares.
Success Tips
- Towel under the lid, every time.
- Do not stir for the first 30 to 40 minutes.
- Turn the heat off before the extracts go in.
- Press the topping gently so it adheres before the surface sets.
Serving Ideas
A tin with parchment between layers, or a plate at a party. Thirty-six small squares is a giving quantity, and the white chocolate drizzle is what makes it look like something bought rather than melted in a crock.
Storage and Reheating
Refrigerate
Airtight in a cool place up to 2 weeks, or refrigerated for longer. Keep it away from heat — condensed-milk fudge softens readily.
Freeze
Freeze well wrapped up to 3 months. Thaw in the fridge rather than at room temperature, since condensation makes candy cane pieces weep and bleed colour.
Reheat
Never. Fudge is finished when it is set, and warming it only softens it back towards something you cannot re-set properly.
Frequently Asked Questions
My fudge went grainy and split.
Almost always water — condensation from the lid, or a wet spoon. That is exactly what the towel in step 2 is preventing. Overheating can do it too, which is why the recipe specifies Low and a long, patient melt.
It has not set after two hours.
Give it longer in the fridge before assuming anything is wrong — an 8-inch slab takes time to chill through. If it is still soft after several hours, the ratio was off, most often from using a larger can of condensed milk than the 14 oz the recipe calls for.
Can I make it without peppermint?
Yes — leave out the extract and the candy canes and you have a plain chocolate fudge, which is structurally identical. The salt and vanilla become more important in that version, since there is nothing else providing contrast.
