Heat the butter on medium-low in a deep skillet or wide saucepan and add onion. Sprinkle with salt and sauce onion until translucent and tender. Add artichoke hearts and stir.
Now break up the cheese wheel and add to the pan, stirring to combine all. Heat the mixture stirring until it is piping hot and melted.
Serve hot with bread or crackers.
**You can leave this as chunky dip or you can use an immersion blender or food processor and process briefly to a texture of your liking.