Slow Cooker Dulce de Leche
Slow Cooker Dulce de Leche is probably the easiest homemade dulce de leche method there is. It does take much longer than the Instant Pot version, but the tradeoff is that you can mostly leave it alone while it cooks. I like this method when I’m already home doing other things and don’t feel like dealing with pressure cooking.
The texture comes out thick, smooth, and rich, especially after a full 8 hours on high. It’s great for cakes, cupcakes, macarons, cheesecakes, and anywhere you want a thick dulce de leche that holds its shape well.

Before we get into it, let’s quickly talk about the question everyone always has: is it safe to cook condensed milk in the can in a slow cooker?
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I’ve been making dulce de leche this way for years. The important part is making sure the can stays fully submerged in water the entire time, using a can that isn’t dented or damaged, and allowing it to cool completely before opening.
If you don’t feel comfortable with this method, you can always make dulce de leche using the oven method instead. I also have an entire dedicated guide to all the methods. Check it out here!
Why I Like This Method
There are several ways to make dulce de leche at home, and each one gives slightly different results.
Here’s why I still like the slow cooker version:
- Very little hands-on work
- Thick, smooth texture
- Easy to make ahead
- Great for fillings and frostings
- You can cook multiple cans at once depending on your slow cooker size

What You Need
You only need a few things:
- Sweetened condensed milk
- A slow cooker or crockpot
- Water
That’s it. I usually use Eagle Brand or La Lechera condensed milk, but any standard 14-ounce can should work.
I also find this method less stressful than stovetop cooking because I’m not constantly checking a simmering pot.

How to Make Slow Cooker Dulce de Leche
The full recipe card is below, but here’s exactly how I make it.
Step 1: Remove the Label and Inspect the Can
Peel the paper label off the can completely. Keep the can sealed.
I always check the can carefully before cooking. If it’s dented or damaged, don’t use it for this method.

Step 2: Add to the Slow Cooker
Place the can in the slow cooker and fill it with water until the can is fully submerged.
I like to keep a few inches of water above the can just to be safe.

s it safe to cook a can of sweetened condensed milk to make dulce de leche?
Step 4: Cook
Cook on high for 8 hours. This is one of those recipes where time really affects texture. After 8 hours, the dulce de leche becomes thick, deeply caramelized, and smooth.

I have been making dulce de leche by cooking a can of sweetened condensed milk for many years now.
Step 5: Cool Completely
Turn the slow cooker off and let the can cool down fully inside the water before removing or opening it. I usually let it sit for several hours.
Never try opening the can while it’s still hot.
Once it’s cool to the touch, open the can and use it in your favorite sweet recipes!

A Few Important Tips
This recipe is simple, but these details are important:
- Keep the can submerged the entire time
- Check the water level occasionally
- Don’t use damaged cans
- Let the can cool completely before opening
I’ve found the texture also depends a bit on the slow cooker itself. Some run hotter than others, so if your dulce de leche turns out lighter than expected the first time, you may just need slightly more cooking time next round.
Once chilled, it becomes even thicker and holds up very well in desserts.
Ways to Use Dulce de Leche
Some of my favorite ways to use dulce de leche are in layered cakes, cookies, pastries, and creamy desserts. It adds a rich caramel flavor and silky texture that works with everything from chocolate to fruit. Here are a few of the recipes and desserts I make with it most often:
- Alfajores – Classic South American sandwich cookies filled with dulce de leche and rolled in coconut or powdered sugar.
- Dulce de Leche Cake – Soft cake layers paired with dulce de leche frosting or filling for an ultra rich caramel dessert.
- Dulce de Leche Cheesecake – Swirled into cheesecake batter or layered on top for a creamy caramel flavor.
- Cupcakes – Perfect for filling vanilla or chocolate cupcakes and pairing with buttercream frosting.
- Macaron Fillings – One of my favorite macaron fillings because it’s smooth, rich, and pairs beautifully with chocolate, coffee, banana, or cinnamon shells, or just make Dulce de Leche Macarons.
- Brownies – Swirled into brownie batter for pockets of gooey caramel throughout.
- Cookies – Great stuffed inside cookies or sandwiched between two buttery cookies.
- Donuts – A delicious filling for homemade brioche or cake donuts.
It’s also incredibly good straight from the fridge with sliced bananas or apples for an easy snack or dessert.

FAQ
I cook it on high for 8 hours, then let it cool completely before opening.
Yes, depending on the size of your slow cooker. Just make sure all the cans stay fully submerged.
It likely needs more cooking time. Different slow cookers run at different temperatures.
I store dulce de leche covered in the refrigerator for up to 2 weeks. You can also freeze it in an airtight container for up to 2 months. It also doesn’t freeze completely solid, so you can scoop it straight from the freezer.
More Dulce de Leche Recipes
If you liked this recipe, check out the other ways you can make Dulce de Leche. You can use an oven, on the stove, and an Instant Pot! If you’re looking for ways to use the dulce de leche, try Salted Dulce de Leche Cupcakes, Dulce de Leche Apple Cake, or Dulce de Leche Bars.

Slow Cooker Dulce de Leche
Ingredients
- 1 14 oz. can sweetened condensed milk 396 grams
Instructions
Slow Cooker Dulce de Leche
- Remove the label of the can. Keep the can sealed.
- Inspect the can to ensure it doesn’t have any dents.
- Place the sealed can in a slow cooker filled up with water to capacity.
- Cook the can on high for 8 hours.
- Ensure the can is covered by water at all times.
- Turn the slow cooker off.
- Let the can cool down all the way in the water before removing and opening, which may take a few hours.
Storage
- Store dulce de leche covered, in the fridge for up to 15 days. Store packaged tightly in the freezer for 1 to 2 months.


Made this today to fill some macarons….so easy and very, very tasty. I was pleasantly surprised at how well it piped. Will definitely use this method again. Thanks for sharing this method.
awesome!!!
Bem fácil pra fazer e fica muito gostoso!!!!!!