How to Make It
Toast the bread. While it's cooling, very carefully snip or slice open a charcoal capsule. The powder therein will burst out and attempt to coat everything in its blast radius in a thin film of soot. so maybe do this in a bowl or glass and wear gloves. Discard the capsule.
Place your desired amount of cream cheese in a bowl, tap a small amount of charcoal in, and stir until it is the appropriate shade of grey, adding more charcoal if you feel like it. Smear on cooled toast, shaking on additional charcoal as desired.
Instagram, then consume until the void in your soul is filled.