These 3-ingredient sausage-stuffed mushrooms are always a hit! The creamy sausage filling pairs perfectly with tender mushrooms for an easy appetizer that works for any occasion. Make a batch ahead of time and refrigerate until ready to bake, or freeze extras for later. With tips for air frying, ingredient swaps, and scaling the recipe up or down, this is a must-try appetizer. Grab the full recipe and all the details now!