Make Easy Lemon Cupcakes With Lemon Frosting Recipe for bright, tender cupcakes topped with zesty lemon frosting — bake and enjoy.
Preheat the oven to 350°F (175°C) and line a 12-cup muffin tin with white paper cupcake liners. Lightly arrange your workspace so a matte grey ceramic mixing bowl and a wooden or silicone spatula sit ready on the painted pine wood surface; this is the practical first move before anything is combined, and it keeps the flow calm and efficient.
Whisk together the all-purpose flour, baking powder, baking soda, and salt in a medium bowl so the leaveners are evenly distributed. In your matte grey ceramic mixing bowl, beat the softened butter and granulated sugar until pale and aerated, then add the eggs one at a time beating after each addition. Fold in the sour cream, fresh lemon juice, lemon zest and vanilla until smooth, then gently fold the dry mixture into the wet just until combined — the batter should be thick, slightly glossy, and flecked throughout with tiny bright lemon zest specks. This is the key transitional state where structure forms and aroma becomes tangy and sweet.

Divide the batter evenly into the lined cups filling them about two-thirds full, smoothing tops with a spatula. Bake for 18–20 minutes until lightly golden and a toothpick comes out clean. Remove from the tin and let the cupcakes cool completely on a wire rack so their crumb sets before frosting; the cooled tops will be slightly domed and evenly golden.
Beat the softened butter until creamy, then gradually beat in the powdered sugar until a thick, sandy stage smooths out. Add fresh lemon juice, lemon zest, vanilla extract, a pinch of salt and 2–3 tablespoons of heavy cream or milk, then continue beating until the frosting is light, glossy and pipeable. Once cupcakes are fully cooled, swirl generous mounds of lemon frosting on each using an open star or round tip, garnish some with thin lemon slices and scatter fresh zest and small lemon wedges around for a bright finish.
