½cupshredded mozzarella cheeseand extra for topping
1egg
Instructions
In a hot pan over medium heat with olive oil, add in ground beef, salt, and pepper. Sauté it, breaking it into pieces with a wooden spoon. When mostly cooked, add in the diced onions and garlic. Sauté until the beef is cooked through and the onions are soften. Set aside to cool.
Remove the stalk of the mushrooms and set it aside. The easiest way is to push the stalk with your thumb to one side until the stalk pops out.
Use a spoon and scoop out the gills and part of the mushroom tops so it's semi-hallow.
Mince the stalks.
In a bowl, combine the beef mixture, minced mushroom stalks, panko, shredded mozzarella cheese, and egg. Mix until fully combined.
Heat your oven to 350F.
Scoop the mixture into the mushroom caps. Place the stuffed caps on a rack overtop of a sheet pan.
Top off with some extra shredded cheese and bake for 15 to 20 minutes.