Pre-heat the oven to 180degrees/160degrees fan and put the cupcake cases in the cupcake tin
Place the butter, sugar, flour, eggs into a large mixing bowl and either using a wooden spoon or electric whisk, beat until you create a pale, yellow mixture.
Using the teaspoons, half fill each of the cupcake cases and place in the pre-heated oven for 20 minutes or until a skewer comes out clean.
Place on a cooling rack to cool completely then using a sharp knife cut a small disc out and fill with the salted caramel spread.
Meanwhile, in a clean & roomy bowl add the softened butter and icing sugar to make the buttercream. Gentle beat by hand or with an electric whisk until smooth then stir in the salted caramel spread until completely combined. Taste and add more salted caramel if required.
Place the butter cream in a piping bag or just use a spoon to cover the top of the cupcake.
Decorate with the mini-eggs and colourful sprinkles.