Greek Yogurt Smash Cake Frosting (No Added Sugar)

You can frost a smash cake with plain, full-fat Greek yogurt—and make it look special without a complicated frosting recipe.

I used a whole 32-ounce container of FAGE Greek yogurt, strained it overnight, and had plenty to cover two 4-inch smash cakes plus mix colors for decorating. It spread easily, wasn’t watery, and worked beautifully on my completely cooled cakes.

My biggest tip? Strain the yogurt ahead of time, but save the frosting and decorating for the day before or the morning of the celebration. The surface can crack when the cake is frosted too far in advance.

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Greek Yogurt Smash Cake Frosting Recipe

Ingredients

• One 32-ounce container of plain, full-fat FAGE Greek yogurt.
• Gel food coloring, optional. Choose the colors you want; the linked bottle is orange.

There’s no added sweetener in my version.

Straining time: Allow at least one hour; I strained mine overnight in the refrigerator.
Yield: Enough in my experience to frost two 4-inch smash cakes, with extra for colored decorations. Your cake height and decorating style will affect how much you need.

1. Strain the yogurt

Set a strainer over a bowl, leaving room underneath for the liquid to collect. Line it with paper towels and spoon in the yogurt.

Refrigerate while it drains. I left mine overnight, which gave me the thick consistency shown in my cake photos.

2. Cool your cakes completely

Let your cakes cool fully before adding frosting. Mine were completely cool, and I didn’t have trouble with the frosting slipping.

Still choosing what to bake? My smash cake recipe roundup is a helpful starting point.

3. Divide and color

Keep some yogurt plain for the base frosting. Divide the rest into small bowls if you want different decorating colors.

Stir in a little gel coloring at a time until you get the shades you like.

4. Frost the cake

Use an offset spatula to spread the yogurt over your cake and between any stacked layers.

This is the decorating tool I wouldn’t skip. It makes spreading the frosting much easier, and I used an offset spatula for the colorful scale design, too.

A cake scraper also helps smooth the outside. You can stop with a simple finish or keep going with colored decorations.

5. Refrigerate until serving

Keep your yogurt-frosted cake refrigerated until serving.

For the best appearance, I would frost it the day before or the morning of the celebration rather than several days ahead.

How I Made the Colorful Scale Design

This was the fun part—and it didn’t require every swipe to be perfect.

1. Cover the cake with a smooth base layer of yogurt frosting.
2. Briefly refrigerate it while you organize your colors.
3. Put a small dollop of colored frosting on the flat back of an offset spatula.
4. Starting near the bottom, press it gently against the cake and swipe upward.
5. Wipe the spatula between colors.
6. Continue around the cake, then work upward in overlapping rows.

Once the first row was in place, it was easier to judge the spacing for the next one.

I also used the strained yogurt for piping. Practice a little on a plate first so you can get a feel for the consistency before decorating your cake.

A smooth finish is lovely, too. Piping and scales are optional.

Cake Tools: What Helps and What You Can Skip

Check your kitchen before shopping. You may already have most of what you need.

Tool	Why it’s useful	Do you need to buy it?
4-inch cake pans	Small pans are handy for smash cakes. I’ve continued using my 4-inch pans for baking for my kids.	Only if you don’t already have pans suited to your cake recipe.
Strainer	Holds the paper-towel-lined yogurt while liquid drains into a bowl.	Use one you already own if it works for this setup.
Offset spatula	Spreads the frosting and creates the scale design.	My first choice if you’re buying one decorating tool.
Cake scraper	Helps smooth the sides.	Helpful, but optional.
4-inch parchment rounds	Save a little cake-pan preparation time.	Skip them if you can cut your own parchment or prepare the pans according to your recipe.

You’ll also need a bowl and paper towels for straining.

If You Want to Try More Decorating

• Wilton beginner decorating set: An option for trying piping without buying a larger collection.
• Wilton 48-piece decorating set: Worth considering if you expect to decorate cakes regularly. Compare the contents before choosing—you don’t need both sets.
• Wilton piping practice board: An optional extra for practicing designs. A plate works for a quick practice session.

Prefer to browse everything together? Here’s my smash cake decorating list on Amazon.

Questions About Greek Yogurt Frosting

Was your frosting watery?

No. I used full-fat Greek yogurt and strained it overnight. That’s the method behind the results in my photos.

Can I strain it for only one hour?

Allow at least one hour, but my own cakes were made with yogurt strained overnight. Give yourself that extra time if you want to follow my method most closely.

Can I frost the cake ahead of time?

I would aim for the day before or the morning of the celebration. Keep it refrigerated. Frosting too early can lead to cracks in the surface.

Does it work like buttercream?

It spread easily for me, and I used it for both the scale design and piping. It is still yogurt, so don’t expect an identical taste, texture or finish to buttercream.

Is it dairy-free?

No—this version contains milk. For another option, see my dairy-free coconut cream smash cake frosting.

What Are You Planning Next?

Still choosing the cake?

Browse my smash cake recipes, including a dairy-free and egg-free smash cake.

Working on the party?

Visit the First Birthday Planning Hub for themes and celebration ideas, then check the party-day items people often forget.

Choosing a birthday gift?

Explore one-year-old gifts by play style or build a practical first-birthday gift basket.

A homemade cake doesn’t need perfect edges to become a favorite birthday memory. Keep the decorating as simple—or as playful—as you like.

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