1-Preheat and Prepare: Start by preheating your oven to 350°F (175°C) and lining your cupcake tins with paper liners for easy removal later. This recipe is all about keeping things simple and enjoyable, so follow along step by step to get those perfect, moist results.

2-Sift Dry Ingredients: First, sift together the 190 grams of all-purpose flour, 1 teaspoon baking powder, 1/4 teaspoon baking soda, and 1/2 teaspoon fine sea salt. Set this aside to ensure everything mixes smoothly.

3-Mix Wet Ingredients: In another bowl, whisk the 110 grams of vegetable oil and 2 large eggs for 1-2 minutes until well combined, then add 150 grams of granulated sugar and whisk for another minute.

4-Combine Flavors: Next, blend in 1 teaspoon vanilla extract, 130 grams milk, 1/3 cup lime juice, and the zest of 3 limes until the mixture is fully incorporated.

5-Fold in Dry Ingredients and Bake: Gently fold in the sifted dry ingredients to keep the batter light and airy. Pour the batter into the lined tins, filling each about two-thirds full, and bake for 10-15 minutes until golden and a toothpick comes out clean.

6-Making the White Chocolate Ganache: While the cupcakes cool, prepare the ganache by finely chopping 225 grams of white chocolate. Heat 225 grams of heavy cream until it almost boils, then pour it over the chocolate and stir until smooth. Chill this in the refrigerator until it sets, which adds that creamy layer we love.

7-Creating the Swiss Meringue Buttercream: For the buttercream, slice 340 grams of cold unsalted butter thinly. Heat 4 egg whites and 200 grams of granulated sugar to 138°F (59°C) over simmering water while whisking constantly. Once ready, beat the mixture in a mixer until stiff peaks form, then gradually add the butter pieces while mixing until smooth. Finally, add 2 teaspoons vanilla extract and fold in the cooled ganache.

8-Frost the Cupcakes: Once everything is cool, frost the cupcakes with the buttercream for a finishing touch. The total time is about 50 minutes, with 30 minutes prep and 20 minutes cooking, so you’ll have fresh treats in no time.