Instructions

  1. In a heavy frying pan (I like cast iron)cook onion and butter on med-high to high heat until onion is tender.
  2. Add mushrooms and cook until they start to brown, stirring often.
  3. Add asparagus, salt, and pepper to taste and cook until crisp-tender. This dish is best when the asparagus is still a bit crisp and bright green. Serve hot.