In a large bowl, add your flour, sugar, mini eggs and butter. Use your hands to combine the ingredients until the mixture looks like breadcrumbs, then squeeze until it comes together as a dough.
Line a square tin 20cm by 20cm and add your shortbread mixture, pressing down the mixture evenly.
Sprinkle extra caster sugar on top for the ultimate shortbread!
Preheat your oven at gas mark 3 and bake for 30 minutes.
Chill for one hour. Decorate with melted milk chocolate and crushed mini eggs and allow to set.
Once set, remove from the tin and slice into rectangles or any shape you'd like!