I would like to know what high-falutin' circles people move in that they use separate, individual dishes for condiments at a BBQ. I have been on this earth 56 years and have never seen that. Just put the ketchup bottle, mustard bottle, relish bottle on the table, add spoon if needed, when done, put lids back on and put back in fridge. Now THAT saves dishwashing.
PS - I would even rather wash dishes than a muffin tin, those things are a pain to get clean.