1. Trim any tough stems from mushrooms and wipe caps with a paper towel if dirty. Cut bite-size.
2. Heat olive oil in a frying pan over medium-high heat. Add garlic; sizzle a few seconds. Add mushrooms and salt and cook until starting to brown, 5 minutes (add a splash of water if browning too fast).
3. Cook over low heat, covered, 5 minutes. Sprinkle with parsley.