Preheat oven to 160c.
Line a 12-hole muffin tin with cupcake liners and set aside.
To make the drizzle, combine the caster sugar and juice of 1 lemon in a small bowl and whisk to dissolve the sugar then set aside.
juice of 1 lemon, 60 g caster sugar
In a large mixing bowl, combine self-raising flour, caster sugar, eggs, salted butter, lemon juice and lemon zest.
250 g self raising flour, 250 g caster sugar, 250 g salted butter, 3 eggs, juice and finely grated zest of 1 lemon
Using a hand-held mixer, mix until almost combined.
Mix the last few strokes by hand with a spatula, making sure to scrape the sides of the bowl and the base.
Divide the mixture evenly (see my notes) amongst the cupcake liners and bake for 25 - 28 minutes or until a toothpick inserted in the centre comes out clean.
While the cupcakes are still warm, poke a few holes in each with a toothpick or a skewer then brush the lemon drizzle evenly over each using a pastry brush.
Once the cupcakes are cool enough to handle, place them on a wire rack to cool fully.