Beginner
Add the softened butter, finely chopped or crushed garlic, optional parsley and salt if unsalted butter is used into a bowl and with an electric whisk beat until the butter gets soft and creamy.
Cut the bread into ½" / 1.25cm wide slices but mind not to cut through the bottom crust, otherwise it won't be much pulling afterwards.
Fill the slices with the creamed garlic butter.
Stuff in optional cheese.
Slice the bread the other way around too so it will make squares or diamonds. If there is some extra cheese left out, just stuff it in anywhere.
Put the bread into a 400°F / 200°C preheated oven for 10 - 15 minutes.