Take butter and cream cheese and put them in a bowl with the peppermint oil
You will need to wait till they are softened so that you can work them with a fork.
If you have just removed them from the fridge or are too impatient to wait for the
natural melting process, then just blast them in the microwave for 30 seconds.
Do not over blast because you will liquefy the butter and then have to put it back in
the fridge and wait for it to chill again
Once the butter and cream cheese is soft enough you will need to mash them
together with a fork until they are well Incorporated