I wholeheartedly recommend Miso Butter Pasta. There are several variations but the main idea is to thoroughly blend a mix of soft (room temperature) Butter and Miso and to use it like a pesto with Spaghetti or Linguine.

My favourite version is to add a tablespoon of Mirin and a dash of roasted sesame oil into the butter miso mix and stir it into a paste. When pasta is ready, mingle hot pasta with the paste so that every noodle is evenly coated, arrange on a plate and sprinkle with a mix of white and black sesame seeds, drop spring onion chopped into small rings on top, voilá!