Name: Russian Buttercream Recipe - Smooth, Simple, and Not Too Sweet
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Ingredients: Unsalted butter (2 cups/454 g), room temperature and slightly cool to the touch; Sweetened condensed milk (1 can/14 oz or 397 g), at room temperature; Pure vanilla extract (1–2 teaspoons); Fine sea salt (a pinch, to taste); Optional flavors: cocoa powder, instant espresso, lemon zest, fruit jam, almond extract, or caramel/dulce de leche; Optional color: gel food coloring

Russian buttercream has a reputation for being the easiest silky frosting you can make at home. It uses just two main ingredients, comes together in minutes, and tastes light and creamy instead of cloyingly sweet. If American buttercream feels heavy and Swiss meringue feels fussy, this recipe is your sweet spot.

It’s great for cakes, cupcakes, and cookies, and it pipes beautifully. Best of all, you can flavor it a hundred different ways without breaking its texture.

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What Makes This Special

Russian buttercream is made with unsalted butter and sweetened condensed milk, plus vanilla and a pinch of salt. That’s it.

The sweetened condensed milk gives the frosting a smooth, velvety feel and a clean vanilla flavor. There’s no cooking, no meringue, and no powdered sugar dust. It’s perfect when you want a stable, creamy frosting that isn’t teeth-achingly sweet.

Shopping List

Unsalted butter (2 cups/454 g), room temperature and slightly cool to the touch
Sweetened condensed milk (1 can/14 oz or 397 g), at room temperature
Pure vanilla extract (1–2 teaspoons)
Fine sea salt (a pinch, to taste)
Optional flavors: cocoa powder, instant espresso, lemon zest, fruit jam, almond extract, or caramel/dulce de leche
Optional color: gel food coloring

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How to Make It

Prep the butter. Cut the room-temperature butter into chunks.It should be soft enough to press a finger into, but not greasy or shiny. Slightly cool butter whips fluffier and holds better.
Cream the butter. In a stand mixer with the paddle attachment or a large bowl with a hand mixer, beat the butter on medium-high for 3–5 minutes until very pale and fluffy. Scrape the bowl at least twice.
Add flavor base. Mix in vanilla and a small pinch of salt.Start with 1 teaspoon vanilla, then adjust later. Beat for 20–30 seconds to combine.
Stream in the condensed milk. With the mixer on medium, slowly pour in the sweetened condensed milk in a thin stream. Take 1–2 minutes to add it all.This helps prevent curdling and keeps the texture smooth.
Whip until silky. Increase speed to medium-high and beat for 1–2 minutes until the frosting looks glossy and spreads easily. If it seems loose, chill the bowl for 10 minutes, then beat again briefly.
Taste and adjust. Add another pinch of salt if it tastes overly sweet. If you want a stronger vanilla note, add up to 1 more teaspoon and mix to combine.
Optional flavoring. Fold in sifted cocoa powder (start with 2 tablespoons), a spoonful of jam, a bit of espresso powder, or caramel.Add gradually and beat just until smooth. Avoid adding too much liquid at once.
Use immediately. Frost cakes or cupcakes right away, or keep the bowl covered if you’re not using it within 10–15 minutes to prevent crusting on the surface.

How to Store

Room temperature: Up to 4 hours if your kitchen is cool (around 70°F/21°C). Keep covered.
Refrigerator: Store in an airtight container for 5–7 days.Let it sit at room temperature for 20–40 minutes, then re-whip briefly before using.
Freezer: Freeze up to 2 months in a sealed container. Thaw overnight in the fridge, then bring to room temperature and beat until smooth and fluffy.

Benefits of This Recipe

Fast and forgiving: No heating, no egg whites, no sugar syrup. It comes together in minutes.
Not too sweet: The sweetness is gentle and balanced, thanks to the condensed milk.
Stable and pipeable: Holds its shape for rosettes, borders, and simple designs.
Silky texture: Smooth, creamy mouthfeel without the grit you sometimes get from powdered sugar frostings.
Flexible flavors: Easily customize with chocolate, coffee, citrus, or nut extracts.

What Not to Do

Don’t use cold or melted butter. Too cold won’t whip properly; melted butter will make it soupy and greasy.
Don’t add the condensed milk all at once. Dumping it in can cause splitting.Stream it in slowly.
Don’t overheat the kitchen. Warm rooms can make the buttercream droop. If it softens, chill the bowl briefly and re-whip.
Don’t add too much liquid flavoring. Watery additions (like thin syrups or fresh juice) can break the emulsion. Use concentrated extracts, zests, or thick jams.
Don’t skip the salt. A tiny pinch sharpens flavors and keeps the sweetness in check.

Alternatives

Chocolate Russian buttercream: Beat in 2–4 tablespoons unsweetened cocoa powder, sifted, and 1–2 tablespoons heavy cream only if needed for spreadability.
Coffee variation: Dissolve 1–2 teaspoons instant espresso in 1 teaspoon hot water.Cool completely, then beat into the finished buttercream.
Lemon or orange: Add 1–2 teaspoons finely grated zest and a small splash of extract. Avoid too much juice.
Berry swirl: Fold in 2–3 tablespoons thick seedless jam or fruit puree reduced on the stove until thick. Add gradually to maintain structure.
Dulce de leche: Substitute part of the condensed milk with thick dulce de leche for a caramel note.Start with a few spoonfuls and adjust to taste.

FAQ’s

Can I make this without a stand mixer?

Yes. A hand mixer works well. It may take a minute or two longer to whip the butter fully, but the result will be just as smooth.

Why did my buttercream split or look curdled?

Temperature mismatch is usually the culprit.

If your butter is too cold or your condensed milk is too chilly, the mixture can look broken. Warm the bowl slightly or let it sit for a few minutes, then beat again. If it’s too warm and soupy, chill for 10–15 minutes and re-whip.

Is Russian buttercream stable in warm weather?

It’s more stable than whipped cream but less stable than meringue buttercreams or American buttercream.

Keep it cool and out of direct sun. For hot conditions, chill the frosted cake and set it out shortly before serving.

Can I color this frosting?

Yes. Use gel food coloring so you don’t thin the buttercream.

Add a small amount, beat to combine, and adjust gradually until you reach the shade you want.

Does this crust like American buttercream?

Only slightly, and mostly on the surface if left uncovered. It stays soft and creamy underneath, which makes it great for smooth finishes and piping.

What if I only have salted butter?

You can use it, but skip the added salt and taste as you go. The final frosting will be slightly saltier, which some people enjoy with caramel or chocolate flavors.

How much does this recipe make?

Using 2 cups of butter and one 14-ounce can of sweetened condensed milk yields enough to frost a 2-layer 8-inch cake with a simple finish, or about 24 cupcakes with modest swirls.

Can I add powdered sugar to make it sweeter?

You can, but it changes the texture and flavor.

If you want it sweeter, add a tablespoon or two at a time, beating well. A better option is to use a touch more condensed milk or a sweet flavoring like dulce de leche.

Is sweetened condensed milk the same as evaporated milk?

No. Sweetened condensed milk is thick and sweet; evaporated milk is unsweetened and thin.

You need sweetened condensed milk for this recipe to work.

Can I use vegan butter?

Yes, with a caveat. Use a high-fat, block-style vegan butter and a dairy-free sweetened condensed milk. The texture will be slightly different but still creamy and pipeable.

In Conclusion

Russian buttercream is fast, forgiving, and wonderfully balanced.

With two staple ingredients and a few minutes of mixing, you get a silky frosting that’s easy to customize. Keep your ingredients at the right temperature, add flavors thoughtfully, and you’ll have a go-to frosting that suits almost any cake or cupcake. Simple, smooth, and not too sweet—this one earns a permanent spot in your recipe box.