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    Home » Frosting

    Lemon Frosting

    April 7, 2022 Updated April 27, 2022 BySam 81 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Please read my disclosure policy.
    Jump to Recipe Jump to Video Print Recipe
    collage of lemon frosting, top image is a close up of lemon frosting on cupcake, bottom image close up of multiple cupcakes frosted from birds eye view

    My Lemon Frosting gets its bright, fruity flavor from real lemon curd! It’s got a silky smooth texture and pipes beautifully, making it the perfect choice for topping both cakes and cupcakes. Recipe includes a how-to video!

    vanilla cupcakes topped with swirls of lemon frosting

    The Best Lemon Frosting Recipe

    This brilliantly flavored lemon frosting strikes the perfect balance between tart and sweet. With it’s pale yellow hue and bright, citrusy flavor, this frosting is a perfect choice for topping spring cakes and cupcakes!

    Why You’ll Love This Recipe:

    • Unlike most lemon frostings that manage a shallow lemon flavor from lemon juice, lemon zest, or even lemon extract, this recipe has a robust flavor from a simple small-batch homemade lemon curd.
    • It spreads and pipes beautifully, much like my classic buttercream frosting.
    • Pairs perfectly with just about any springtime recipe, but especially my lemon blueberry cake!

    To make sure the added step of cooking a curd was really worth the effort (a little time on the stovetop has certainly proven worth it for my German buttercream and ermine frosting!), I asked half a dozen of my family members do a blind taste test. When compared to a frosting made with lemon juice and zest, every single person overwhelmingly preferred this version, so I definitely think it’s worth the extra effort! 

    Let’s see if you agree 😊

    What You Need

    overhead view of ingredients including butter, sugar, lemons, eggs, and salt

    You only need a handful of ingredients for the most flavorful lemon frosting:

    • Egg yolks. We’ll use these for our lemon curd. Don’t worry–they’ll be thoroughly cooked and safe to eat!
    • Lemon juice. Fresh squeezed lemon juice is best for the most flavorful lemon frosting.
    • Sugar. Compared to my classic lemon curd, you’ll notice that today’s recipe has a lesser amount of granulated sugar. This is intentional, since we’ll need to use powdered sugar later on and we don’t want our frosting to be overwhelmingly sweet.
    • Unsalted butter. Use unsalted butter so we can control the amount of salt in our frosting.

    SAM’S TIP: Do not add vanilla extract! It may seem odd to have a frosting recipe without any vanilla extract (even my chocolate frosting has a splash!), but I found that even the tiniest amount of vanilla completely dominated the lemon flavor in this frosting. It’s intentionally missing from this ingredient list, so leave it out! 

    Remember, this is just an overview of the ingredients I used and why. For the full recipe please scroll down to the bottom of the post!

    How to Make Lemon Frosting

    collage of four photos showing how to make frosting with fresh lemon curd
    1. Combine the lemon curd ingredients in a small saucepan and cook over medium-low heat until the mixture thickens.
    2. Pour the curd through a fine mesh strainer into a heatproof bowl and allow it to cool completely.
    3. Beat the butter until it is light and fluffy, then gradually add your powdered sugar until it is fully incorporated.
    4. Add the cooled lemon curd and mix until everything is completely combined. Use as desired!

    SAM’S TIP: The curd must be cooled completely before adding it to the butter, or it could melt everything. Nobody wants to deal with that mess!

    white bowl full of pale yellow frosting being stirred by a spatula

    Frequently Asked Questions

    Can I just substitute store-bought lemon curd?

    Yes, you could technically use a store bought lemon curd (about ⅓-½ cup), but the flavor may not be as pure and the frosting may end up sweeter. 

    What flavors go well with lemon frosting?

    This frosting is great on pretty much any cake or cupcake. I’d suggest you try it with my vanilla cake, white cake, strawberry cake, or if you’re crazy for lemon, my lemon cake!

    Does lemon frosting need to be refrigerated?

    If made in advance, yes, it needs to be stored in an airtight container in the fridge. It will keep this way for 2-3 days and will need to thaw to room temperature before you can spread or pipe it.

    Once the frosting is on your cake/cupcake, it can sit at room temperature for several hours, but for best results, I recommend keeping it refrigerated.

    vanilla cupcake piped with a thick dollop of pale yellow frosting

    Enjoy!

    Let’s bake together! I’ll be walking you through all the steps in my written recipe and video below! If you try this recipe, be sure to tag me on Instagram, and you can also find me on YouTube and Facebook

    close-up overhead view of cupcakes with piped swirls with lemon frosting

    Lemon Frosting

    This lemon frosting gets its bright, fruity flavor from real lemon curd! It's got a silky smooth texture and pipes beautifully, making it the perfect choice for topping both cakes and cupcakes.
    Don't forget to watch the how-to video!
    Recipe makes enough frosting to thoroughly cover one 9×13” cake, a 2-layer 8” or 9” cake, 24 cupcakes (modestly) or 12 cupcakes (generously). This recipe will also fully cover my (3 layer) lemon blueberry cake as the layers are thin, but if you like extra frosting or want to do decorative swirls I recommend increasing the recipe by 50%.
    5 from 36 votes
    Print Pin Rate
    Course: Frosting
    Cuisine: American
    Cooling Time: 15 minutes minutes
    Total Time: 15 minutes minutes
    Servings: 12 servings
    Calories: 305kcal
    Author: Sam Merritt

    Ingredients

    For Lemon Curd

    • 2 large egg yolks
    • ⅓ cup (80 ml) lemon juice fresh-squeezed preferred
    • 2 Tablespoons granulated sugar
    • ¼ teaspoon table salt
    • 4 Tablespoons (56 g) unsalted butter cut into pieces

    For Frosting

    • 1 cup (226 g) unsalted butter softened
    • 3 cups (375 g) powdered sugar

    Recommended Equipment

    • Mixing bowl
    • Saucepan
    • Fine Mesh Strainer
    • Electric mixer
    Prevent your screen from going dark

    Instructions

    • In a small saucepan, whisk together egg yolks, lemon juice, sugar, and salt.
      2 large egg yolks, ⅓ cup (80 ml) lemon juice, 2 Tablespoons granulated sugar, ¼ teaspoon table salt
    • Add butter and cook over medium-low heat, whisking constantly until mixture is thickened (the whisk should leave trails through the curd and it should be able to coat the back of a spoon, see video or photos in post for visual if desired).
      4 Tablespoons (56 g) unsalted butter
    • Remove from heat and pour through a fine mesh strainer into a heatproof bowl. Allow to cool completely before proceeding (you can transfer to the refrigerator to cool faster).
    • Using an electric hand mixer or stand mixer, beat 1 cup softened butter until light and fluffy (high speed about 30-60 seconds). Gradually add powdered sugar until completely combined.
      1 cup (226 g) unsalted butter, 3 cups (375 g) powdered sugar
    • Drizzle in cooled lemon curd and stir until completely combined. Be sure to scrape the sides and bottom of the bowl to ensure ingredients are well-combined. Note: if frosting is too thin you can add additional powdered sugar, up to 1 cup/125g.
    • Spread or pipe over cake or cupcakes.

    Notes

    Storing/Making in Advance

    The lemon curd can be made up to a day in advance, simply store in the refrigerator in an airtight container until ready to use (you do not need to return to room temperature before using). The assembled frosting may be prepared and stored in an airtight container in the refrigerator for 2-3 days before using, you will need to let the frosting return to near room temperature and stir until smooth before using. Once used to decorate a cake/cupcake, the frosting may sit at room temperature for several hours but for best results I recommend refrigerating.

    Nutrition

    Serving: 1serving | Calories: 305kcal | Carbohydrates: 33g | Protein: 1g | Fat: 20g | Saturated Fat: 12g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 83mg | Sodium: 53mg | Potassium: 17mg | Fiber: 1g | Sugar: 32g | Vitamin A: 633IU | Vitamin C: 3mg | Calcium: 10mg | Iron: 1mg

    Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.

    Tried this recipe? Show me on Instagram!Mention @SugarSpun_Sam or tag #sugarspunrun!

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    « Strawberry Cake
    Lemon Blueberry Cake »

    Reader Interactions

    Comments

    1. Tess

      September 20, 2023 at 10:01 pm

      Hi Sam, I’ve tried to make this recipe twice and each time the frosting is very runny, if i leave it in the fridge it stiffens up but the minute i take it out and try to pipe it doesn’t hold shape, what could it be?

      Reply
      • Sam

        September 21, 2023 at 10:38 am

        I’m so sorry to hear this, Tess! I wonder if the lemon curd needed to be thickened a little bit more, or maybe just a little more powdered sugar stirred in could help. 🙁

        Reply
    2. Dawn

      August 16, 2023 at 11:04 pm

      5 stars
      I made this for 24 cupcakes and it was amazing. I had people say I should make it for my wedding coming up. I have one question. It says 12 servings for the frosting but when I made a double batch for 24 cupcakes it was twice as much as I needed. Can I make the frosting and froze it ahead of time and then just frost the cupcakes the night before?

      Reply
      • Sam

        August 19, 2023 at 11:20 pm

        Hi Dawn! I haven’t personally frozen the frosting in advance, but I don’t see any reason why it wouldn’t work fine to do so. 🙂

        Reply
    3. Bridgette Wood

      August 10, 2023 at 3:20 pm

      Bridgette Wood
      I just made this lemon kird frosting and we both LOVE it! Thank you so much for sharing, GOD BLESS.

      Reply
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    The author (Sam) in blue shirt holding donut Hi, I'm Sam! I'm dedicated to bringing you sweet, simple, and from-scratch dessert recipes. My life may or may not be controlled by my sweet tooth. Send help (or chocolate). Read more about me.

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