With the chorizo sausage, I used cilantro and oregano for the herbs.
If you were using an Italian sausage, try basil, oregano, and/or parsley.
If you’re using a breakfast sausage, thyme, sage, and rosemary would be good.
Also try different cheeses, maybe a sharp cheddar with breakfast sausage or ricotta salata with Italian. Mix it up! Have a crazy mushroom party!
Find it online: https://hilahcooking.com/easy-stuffed-mushrooms/