Say hello to our Hot Fudge Sauce Condensed Milk Buttercream! The versatility of this Hot Fudge Chocolate Condensed Milk Buttercream knows no bounds.
Whether slathering it over a classic chocolate cake, decorating cupcakes with a generous swirl, or sandwiching it between layers of a decadent dessert or even cookies, this buttercream is all things FABULOUS!

Butter, Butter And More Butter!
What’s buttercream without the rich, creamy goodness of butter? In this recipe, we use a whopping 500g of unsalted softened butter BUT there’s no need to panic! The recipe can easily be halved. As it stands, it will easily ice up to 36 cupcakes with a rosette-style swirl.
The addition of my homemade Hot Fudge Chocolate Sauce makes this buttercream even more special! You can of course use store-bought HotFudge Sauce, but I don’t think you’ll find any better than homemade!
It literally PIPES LIKE A DREAM! The pattern definition in these borders is fabulous using a 1M Piping Tip.
Ingredients In Hot Fudge Chocolate Condensed Milk Buttercream
- Unsalted Softened Butter: This is the base of the buttercream, providing richness and a smooth texture. Softening the butter makes it easier to incorporate with other ingredients.
- Sweetened Condensed Milk: Adds sweetness (but not too much), creaminess, and a hint of caramelized flavor to the buttercream. It also contributes to a soft, silky texture. The sugar content in the sweetened condensed milk means there is no need to add powdered sugar to the buttercream! Having said that, you certainly can add powdered sugar if you like for a sweeter buttercream!
- Hot Fudge Sauce: A luscious homemade chocolate sauce is my choice, however you can definitely use store bough. The fudge sauce brings a deep chocolate flavor and a luxurious, velvety texture to the buttercream.
How To Make Hot Fudge Chocolate Condensed Milk Buttercream
Softened Butter: In a large mixing bowl, beat unsalted softened butter for 2-3 minutes until creamy and smooth. Add Sweetened Condensed Milk: Add a can of sweetened condensed milk to the whipped butter, beating continuously for 1-2 minutes until well combined.

Incorporate Hot Fudge Sauce: If using store-bought hot fudge sauce add it to the butter-condensed milk mixture. Beat until smooth. I recommend my Hot Fudge Chocolate Sauce. It's beyond delicious!

Whip the Buttercream: Continue beating the chocolate condensed milk buttercream on medium-high speed for 1-2 minutes or until it becomes light and fluffy. This step ensures a creamy and airy texture.
Final Touch: If needed, adjust the taste with additional hot fudge sauce. Ensure that the buttercream has a uniform and smooth texture. You can add more or less fudge sauce if you like.
Use Immediately or Store: The hot fudge chocolate condensed milk buttercream is now ready to be used. Frost your cakes, cupcakes, or desserts of choice immediately.
Store any leftover buttercream in the refrigerator for one week or freeze for two months. Before using it again, allow it to come to room temperature and re-whip for a smooth texture.

My Top Tip
Alright, so here's the deal with our Hot Fudge Sauce Condensed Milk Buttercream: if you notice it looking a bit wonky during mixing—like it's starting to separate or look curdled—don't freak out! It happens sometimes, no biggie.
Just pop that bowl of buttercream into the fridge for about 20 minutes to let it chill out. Then, when you bring it back out, give it another go with the mixer at medium-high speed. Keep at it, and you'll see the magic happen—the buttercream will come back together, smooth and creamy as ever.

So Versatile!
The versatility of this Hot Fudge Chocolate Condensed Milk Buttercream knows no bounds. Whether slathering it over a classic chocolate cake, decorating cupcakes with a generous swirl, or sandwiching it between layers of a decadent dessert or even cookies, this buttercream is all things FABULOUS!
Once you have tried it, you will never go back to the powdered sugar-puff that engulfs the kitchen with American Buttercream! Honestly, this chocolate condensed milk buttercream is where it's at!

Common Questions
While you can use salted butter, it's best to stick with unsalted butter for this recipe. Using unsalted butter allows you to control the amount of salt in the buttercream, ensuring the perfect balance of flavors.
The buttercream can be stored in an airtight container in the refrigerator for up to 1 week. Before using it again, allow it to come to room temperature and re-whip to restore its smooth texture.
Yes, you can make the buttercream ahead of time. Prepare the buttercream as instructed and store it in an airtight container in the refrigerator. When ready to use, allow it to come to room temperature and re-whip to restore its texture.
Yes, you can freeze the buttercream for 2-3 months. Place it in a freezer-safe container, ensuring it's well-sealed to prevent freezer burn. Thaw the buttercream in the refrigerator overnight before using it, then re-whip to restore its texture.
If the buttercream looks curdled during mixing, don't worry! Simply chill the mixture in the refrigerator for about 20 minutes to firm it up slightly. Then, resume mixing at medium-high speed until the buttercream becomes smooth and creamy again.
Hot Fudge Chocolate Condensed Milk Buttercream
INGREDIENTS
- 500 g (2.2 cups) butter unslated and softened
- 395 g (1.29 cups) sweetened condensed milk
- 1 cup (1 cup) hot fudge sauce cooled
INSTRUCTIONS
- In a large mixing bowl, beat the softened butter for 2-3 minutes until light and fluffy.
- Add the sweetened condensed milk to the butter, beating for 1-2 minutes until well combined.
- Add the room temperature hot fudge sauce to the butter mixture. Beat until the mixture is smooth and has a uniform consistency.
- Enjoy your delicious Hot Fudge Sauce Condensed Milk Buttercream on your favorite desserts!
Azmiree Tahsin says
1 cup dark chocolate plz mention in gm
Fay says
Hi Azmiree! This recipe doesn't use dark chocolate, it gets its chocolate from the Fudge Sauce. They all weigh differently depending on which brand you use, so 1 Cup is a great guide. You can adjust and add more or less.
Harriet Young says
Totally delicious! This buttercream was the perfect consistency and worked really well. Thank you!
Fay says
I am so pleased!
DK says
Wow - this butter cream is amazing! Not only is it the perfect smooth texture, but also a deliciously sweet and creamy taste!
Fay says
Thank you! So glad you like it!
Lubna says
This is so easy. Thank you for sharing this recipe and all the tips.
Fay says
You are very welcome! I'm glad you like it.
FARAH ABUMAIZAR says
This is so delicious looking and love these gorgeous photos! The piping is a dream, I really enjoy using condensed milk so can't wait to try this out!
Fay says
Thank you Farah. I am so pleased you like it!
Ned says
My goodness sakes! Buttercream and fudge is a match made in Heaven! Thank you for this fantastic yumminess!
Fay says
You're welcome! I'm glad you like it Ned 🙂
Martina says
Hi, do the cupcakes decorated with condensed milk buttercream need to be kept in the fridge or can they stay out? Thank you
Fay says
They are best kept in the refrigerator in warm weather due to the dairy content and food safety concerns. In warmer weather, I take them out of the refrigerator around 30 minutes before serving, It cold weather, you can take them out an hour or so before serving.