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cupcake sits on a white cupcake stand surrounded by the other cupcakes
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Lemon Lime Filled Cupcakes

Lemon box mix is dressed up by adding zest and the cupcakes are filled with lime curd then topped with a sweet buttercream frosting.
Prep Time10 mins
Cook Time22 mins
Total Time32 mins
Course: Cupcakes
Cuisine: American
Keyword: box mix cupcakes, lemon lime cupcakes, lemon lime filled cupcakes
Servings: 24 cupcakes
Calories: 297kcal
Author: NicholeL


  • 15.25 oz lemon cake mix
  • 3 large eggs
  • cup vegetable oil
  • 1 cup water
  • 1 teaspoon lemon zest
  • 1 teaspoon lime zest
  • 6 oz lime curd
  • 3 sticks unsalted butter at room temperature
  • 3 ¾ cups powdered sugar
  • ¼ teaspoon salt
  • 1 teaspoon milk or more, as needed


  • Preheat your oven to 350 degrees. Line two cupcake pans with paper liners.
  • Combine boxed cake mix with eggs, oil and water in a stand mixer. Beat on low speed until combined. Zest half of the lemon and half of the lime and add into the batter.
  • Fill each cavity of the cupcake pan ⅔ of the way full with the batter. Bake for 20-23 minutes or until cupcakes are golden.
  • Remove from the oven and let cool completely.
  • Once cooled, cut a circle out of the center of each cupcake and fill with a teaspoon of lime curd. Place the cut out piece back on top.
  • Beat butter in a stand mixer until smooth. Add in powdered sugar 1 cup at a time until fully combined. Then add in salt and milk until it reaches a smooth and pipeable consistency.
  • Transfer frosting to a piping bag fitted with a large star tip and pipe frosting onto cupcakes.
  • Decorate cupcakes with yellow and green sprinkles, if desired.


Egg, oil and water measurements are according to the box of cake I used. Check your boxed cake mix for what it says to include. 
Baked, unfilled and unfrosted cupcakes can be frozen once completely cooled. They'll last in the freezer for a few months. 


Serving: 1cupcake | Calories: 297kcal | Carbohydrates: 36g | Protein: 2g | Fat: 17g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 68mg | Sodium: 174mg | Potassium: 21mg | Fiber: 1g | Sugar: 29g | Vitamin A: 388IU | Vitamin C: 1mg | Calcium: 46mg | Iron: 1mg