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A rich, moist buttermilk chocolate cake is paired with a silky bittersweet chocolate Swiss meringue buttercream and filled with an easy homemade lemon curd. These are fabulously addictive Double Chocolate Lemon Surprise Cupcakes!

Double Chocolate Lemon Surprise Cupcakes

The Chocolate Swiss Meringue Buttercream is creamy and smooth with a delicate chocolate flavor. Unlike the American Buttercream, this frosting isn’t overly sweet – a perfect pairing with this intense chocolate cake! The tart lemon curd surprise in the middle elevates these cupcakes above the quotidian!

Double Chocolate Lemon Surprise Cupcakes
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Of course, this double chocolate lemon surprise cupcake could stand alone with no filling. A chocolate ganache or caramel filling is never remiss, but the slightly tart lemon curd tantalizes the tastebuds!

I was experimenting with how buttermilk vs sour cream tasted in chocolate cake, but I loved both so much that I had to use them both. The sour cream variety was a bit lighter and more springy, while these buttermilk chocolate cupcakes are a bit denser and more like pound cake. I love pound cake.

Double Chocolate Lemon Surprise Cupcakes

The cake in these double chocolate lemon surprise cupcakes melts in your mouth while the chocolate flavor intensifies.

Double Chocolate Lemon Surprise Cupcakes
Double Chocolate Lemon Surprise Cupcakes
5 from 2 ratings

Double Chocolate Lemon Surprise Cupcakes

A rich, moist buttermilk chocolate cake is paired with a silky bittersweet chocolate Swiss meringue buttercream and filled with an easy homemade lemon curd in these fabulously addictive Double Chocolate Lemon Surprise Cupcakes!
Prep: 30 minutes
Cook: 15 minutes
Assembling Time: 20 minutes
Total: 1 hour 5 minutes
Servings: 18 cupcakes

Ingredients 
 

For the Cupcakes:

Instructions 

To make the Cupcakes:

  • Preheat the oven to 350°. Line two muffin tins with 18 cupcake liners.
  • In a medium bowl whisk together the flour, cocoa powder, espresso powder, baking powder and salt; set aside.
  • In the bowl of a stand mixer fitted with the paddle attachment beat the butter and sugar together on high until thick. Add the eggs one at a time, beating well after each addition. Add the vanilla with the last egg. Scrape down the sides of the bowl as needed. Add the melted chocolate and mix to incorporate.
  • Reduce mixer speed to low and alternately add flour mixture and buttermilk beginning and ending with flour, scraping down the sides of the bowl as needed. I did three additions. You want to stop mixing as soon as the last of the flour has been incorporated.
  • Scoop the batter into the prepared muffin tins. The batter should almost reach the top of the liner. Bake in preheated oven 15 to 20 minutes or until a toothpick inserted into the center comes out with a few clinging crumbs.
  • After 2 minutes, remove to a wire rack and let cool completely before filling or frosting.

To Prepare the Buttercream:

  • Follow the recipe for Swiss Meringue Buttercream but add 75 grams bittersweet chocolate (melted and cooled) after adding vanilla and salt.

Notes

Even though these were still relatively moist on day 3 with no icing, I would not recommend serving them that way. They are best when filled and iced as soon as possible and eaten on day 1 or 2.

Nutrition

Calories: 185kcal | Carbohydrates: 24g | Protein: 3g | Fat: 9g | Saturated Fat: 5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 1g | Cholesterol: 51mg | Sodium: 95mg | Potassium: 111mg | Fiber: 2g | Sugar: 17g | Vitamin A: 218IU | Vitamin C: 1mg | Calcium: 27mg | Iron: 1mg
Course: Dessert
Cuisine: American
Calories: 185
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Double Chocolate Lemon Surprise Cupcakes

Hi, I’m Chef Lindsey!

I am the baker, recipe developer, writer, and photographer behind Chef Lindsey Farr. I believe in delicious homemade food and the power of dessert!

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46 Comments

  1. Hi, looking forward to making these but I don’t see a measurement for the baking powder you mention… thanks!

    1. Hi Ben, I apologize for that! It must have been dropped when we updated our recipe cards. It is 1 teaspoon and I have updated the recipe. Thank you so much for catching that! Happy baking!

  2. Hi I have tried rereading your recipe but don’t see the quantity required for buttermilk, can you please advice? Am going to bake it for my baby girl’s party this weekend. Really excited to try the chocolate-lemon combination thanks!

    1. Hi Melissa! Oh my goodness! Thank you so much for the comment. It is the last ingredient in the recipe but I typed “buttercream” instead of “buttermilk”. I will change the recipe immediately! Thank you again for asking. Happy baking! And let me know how you like them 🙂

  3. Amazing cupcakes! never tried chocolate with lemon, bet it tastes awesome and I love the way you have frosted the cupcakes,very pretty 🙂