Recipe provided by Chef Crusco Catering in Austin, TX Ingredients 2 tbsps. Unsalted Butter 3 tbsps. EVOO 1 Yellow onion – peeled and roughly chopped 4 garlic cloves – peeled and roughly chopped 20 Fresh Cremini Mushrooms – cleaned and roughly sliced 10 Fresh Button Mushrooms – cleaned and roughly sliced 10 Fresh Shiitake Mushrooms