1: Preheat the oven to gas 4, 180°C, fan 160°C. Line a muffin tin with 12 mini silicone cupcake cases.
2: In a mixing bowl, whisk the butter and sugar together until light and fluffy. Add the eggs one at a time, beating well. Sift in the flour, baking powder and salt. Add the lemon zest, juice and extract; fold to combine.
3: Spoon the mixture evenly into the cupcake cases. Bake for 16-18 mins, until risen and springy when pressed. Remove from the oven and leave to cool in the tin for 5 mins. Transfer to a wire rack to cool completely.
4: To make the icing, whisk the cream to soft peaks in a bowl before combining with the icing sugar. To serve, spoon a heaped teaspoon onto each cupcake, then top with a little lemon curd and a mini meringue to finish.