Heat oven to 180C/160C fan/gas 4
Line a 12-hole muffin tin with cupcake or muffin cases.
Sift the flour and sugar into a large mixing bow
Add lemon zest and poppy seeds to the flour and mix
Beat the eggs into the yogurt, then tip this into the dry ingredients along with the melted butter.
Mix together with a wooden spoon or whisk until lump-free (just use the mixer)
Divide the mix between the cases.
Bake for 20-22 mins until a skewer poked in comes out clean. The cakes will be quite pale on top still.
Cool for 5 mins in the tin, then carefully lift onto a wire rack to finish cooling.