Pre-heat your oven to 180 degrees and put cupcake cases in a 12 hole muffin tin.
Mix the butter and caster sugar together then add your eggs until these are fully incorporated.
Sieve in the flour, baking powder and cocoa powder into the wet ingredients and mix until fully incorporated.
Add in the salted caramel essence and milk and mix them until fully incorporated.
Fill each cupcake case about ¼ full and then bake in the oven for 20 minutes. Once baked, leave on a cooling rack to cool.