This easy strawberry lemonade cupcakes recipe features moist lemon cupcakes that are topped with strawberry buttercream frosting. Both lemon juice, lemon zest, and fresh strawberries are used to really pull off that classic lemonade flavor!
Preheat the oven to 350 degrees and line a 12-count muffin pan with cupcake liners.
Lemon Cupcakes
In a medium mixing bowl, whisk together the flour, baking powder, and salt. Set aside.
In a large mixing bowl, whisk together the sugar, oil, egg, egg white, yogurt, lemon zest, lemon juice, and vanilla extract until combined.
Alternate adding the flour mixture and the kefir milk to the wet ingredients (flour, milk, flour), whisking just until everything is combined (be careful not to overmix).
FIll each cupcake liner ⅔ of the way full (just under 3 tablespoons of batter) and bake for 15-20 minutes. Use a toothpick to check the centers for doneness and let the cupcakes cool for 10 minutes in the pan before transferring them over to a wire rack to cool completely.
Strawberry Buttercream
In a food processor or blender, puree the strawberries for 5 seconds.
In the bowl of an electric stand mixer using the paddle attachment, beat the butter on high speed until creamy (about 1-2 minutes). Add the powdered sugar, pureed strawberries, and vanilla extract and mix on low speed until combined (about 30 seconds).
Then increase the speed to high and beat for another 1-2 minutes until light and creamy.
Assemble
Frost the cooled cupcakes. I placed the frosting in a piping bag and used the Wilton 1M piping tip. Top each cupcake with a lemon slice and strawberry (optional).
Keep any leftover cupcakes in an airtight container in the refrigerator for up to 5 days.
Notes
Measuring Flour: To help ensure you don’t add extra flour, follow these three simple steps: 1) Fluff up the flour using a fork. 2) Spoon the flour into your measuring cup. 3) Scrape a knife across the top of the measuring cup to level out the flour.
Room Temperature Ingredients: If an ingredient calls to be at room temperature before baking, do it. This helps to ensure the best quality in both flavor and texture. If you don't, the cupcakes texture will be off.
Cupcake Batter: Fill the cupcake liners ⅔ of the way full, which is just under 3 tablespoons of batter. I used my cookie scoop to make this step easier.