3 tablespoons butter
1 pound white button mushrooms, minced
2 shallots, minced
2 cloves garlic, minced
1 cup shredded Parmesan cheese
1/4 cup chopped fresh parsley
1 cup Panko-style breadcrumbs
1 large egg, lightly beaten
Salt and pepper, to taste
In a large skillet, heat the butter over medium-high heat until it melts. Add the mushrooms and cook, stirring frequently, until they have reabsorbed their liquid, about 10 minutes.
Add the shallots and garlic and cook until softened, about 5 minutes.
Remove the mixture from the heat and allow it to cool.
In a large bowl, combine the cooled mushroom mixture with the cheese, parsley, breadcrumbs and egg. Season the mixture with salt and pepper.
Cover the mixture with plastic wrap and place it in the refrigerator for at least an hour or as long as overnight.
Preheat the oven to 450 degrees F and line a baking sheet with parchment paper.
Form the meatball mixture into 12 balls and gently roll them between your palms so they are smooth and round.
Bake the meatballs for 15 minutes, until browned on the outside and warmed through.
Serve with your favorite sauce.