Cream Cheese Stuffed Mushrooms, a Super Cheesy and Simple Appetizer. These Cream Cheese Stuffed Mushrooms are so simple and easy to prepare. This is a stuffed mushroom without breadcrumbs, just featuring my fav ingredient. You could have fun and experiment with this recipe by adding things to the mix but I like these just the way they are! These mushrooms make for a quick and easy appetizer and they always quickly get eaten up, Need a simple appetizer for your next get together? Give these mushrooms a try!