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Home » Recipes » Frostings & Icings

May 18, 2026

Fluffy Small Batch Lemon Buttercream Frosting

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This small batch lemon buttercream is sweet, tart, and seriously light as air. I'm not even a frosting girl, and I could eat this by the spoonful! I love using it on my small batch lemon poppy seed cupcakes, but you could totally use it on these vanilla cupcakes, too. This recipe makes just enough frosting for a small cake or 6 cupcakes!

A white bowl of small batch lemon buttercream on a white counter next to lemons and a white linen.

I'm a firm believer that cake is only as good as the frosting you put on it, so naturally, I'm picky. I can tell right away when a buttercream is half butter and half shortening. Absolutely not, next, goodbye.

So obviously, I have strong frosting opinions, and idk, maybe I need to touch grass? But either way, the benefit is all yours, cause being a cake snob means I've created dozens of good recipes to keep in your back pocket.

This buttercream is basically like a cloud. (Seriously, do you see that texture?) This is a recipe I have been making since I was in pastry school, and it's good good.

Like my small batch vanilla buttercream or even my cream cheese frosting, this version is buttery, not-too-sweet, and easy to pipe. The recipe calls for just a few ingredients, but most notably, fresh lemon zest and juice. The zest gives it that intense lemon flavor, and the juice adds a hint of tartness.

I hope you love it as much as I do!

Mixer directions

A silver bowl of butter and powdered sugar on a white counter.
Start by beating the butter and powdered sugar until it's thick and smooth.
A silver bowl of frosting with vanilla extract and lemon zest on a white counter.
Then, add the vanilla extract, lemon zest, fresh lemon juice, and a little salt.
A white bowl of small batch lemon buttercream on a white counter.
Turn the mixer to high and beat the buttercream until it's fluffy, 3-4 minutes.

The key to light and fluffy buttercream is to whip a lot of air into it! Make sure you're using a whisk attachment on your mixer, and whip it for a few minutes until the frosting reaches your desired consistency.

Citric acid

A bag of citric acid on a white counter.

This ingredient is totally optional, but if you want the frosting to be a little more tart, a pinch of citric acid does wonders! You don't want to add too much lemon juice, because it will make the frosting too thin.

Citric acid is what they use in sour candy, so it's perfect here! Just add a pinch or two to the buttercream. (Seriously, like a ⅛th teaspoon or less, a little goes a long way!)

If you don't have this ingredient on hand or don't want to buy it, then don't! It's only worth it if you like to use it in a variety of recipes.

Small batch cupcakes with lemon buttercream on a white tray next to sliced lemons on a white background.


When it comes to small-batch baking, I always recommend using a scale to measure the ingredients. If you don't have a scale, here are all my tips on how I measure ingredients for small batch baking.


If you try this recipe, I would love if you left a star rating and review. I read every comment and love hearing what you think about my recipes. Thanks so much for supporting Midnight Bake Club!

Simple Small Batch Lemon Buttercream

This small batch lemon buttercream is the perfect topping for lemon cupcakes, small sheet cakes, and more! With lemon zest and lemon juice (no extract!), this frosting is sweet, tart, and super fluffy. Even better, it comes together in under 15 minutes.
Print Recipe Pin Recipe
Prep Time 15 minutes mins
Cook Time 0 minutes mins
Total Time 15 minutes mins
Course Dessert
Cuisine American
Servings 6 servings

Equipment

  • Stand mixer or hand mixer with whisk attachment

Ingredients
  

  • 60 grams unsalted butter softened (¼ cup)
  • 120 grams powdered sugar sifted (1 cup)
  • Pinch of Kosher salt
  • ½ teaspoon pure vanilla extract
  • ½ teaspoon lemon zest
  • 2 teaspoons fresh lemon juice more as needed
  • 1-2 pinches citric acid to taste - optional

Instructions
 

  • Add the softened unsalted butter, 60 grams (½ cup) of the powdered sugar, and a pinch of Kosher salt to a medium mixing bowl. Using a hand mixer or stand mixer with a whip attachment, beat the butter and powdered sugar until it's smooth. Add the remaining 60 grams (½ cup) of powdered sugar, and beat until the mixture is thick and creamy. It may be a little crumbly at first, but if you keep mixing, it'll eventually come together!
  • Add the vanilla extract, lemon zest, and lemon juice to the frosting. Beat until everything is well-combined, scraping down the sides of the bowl 2-3 times in between. Add more lemon juice ½ teaspoon at a time if the frosting is too thick.
  • Optional: For extra-tart buttercream without adding too much liquid, add 1 pinch of citric acid. (Don't go wild here. A little goes a long way!) Taste and add more if you like a tarter buttercream.
  • Turn the mixer to medium-high and beat the buttercream for another 2-3 minutes, until it's very fluffy and lightened in color. Store in an airtight container for later or use it on cupcakes, cake, etc.

Notes

If the buttercream is too thick, add more lemon juice ½ teaspoon at a time, until you reach your desired consistency. Or, if it's too thin, add more powdered sugar 8 grams (1 Tablespoon) at a time.
This recipe makes roughly ¾-1 cup of frosting, which is enough for 6 cupcakes or a small sheet cake.
 
Citric acid is what makes sour candy sour. I like to add it here because it won't affect the texture of the buttercream! Of course, if you don't have it on hand or don't want to buy it, you totally don't need it. The frosting is great either way!
 
This frosting is fairly white. To make it look more yellow, feel free to add just 1-2 drops of yellow food coloring. I like natural food coloring, so it doesn't affect the taste.

Nutrition

Serving: 1servingCalories: 151kcalCarbohydrates: 20gProtein: 0gFat: 8gSaturated Fat: 5gCholesterol: 22mgSodium: 8mgPotassium: 5mgFiber: 0gSugar: 20gCalcium: 3mgIron: 0mg
Keyword buttercream, frosting, lemon, small batch baking
Tried this recipe?Let us know how it was!

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Hi, I'm Sara!

I am a trained pastry chef who loves listening to music & baking late into the night. Here, I'm sharing my go-to small batch baking recipes for any late night craving.

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