Name: Boursin Stuffed Mushrooms
Ingredients: 24 large button mushrooms, stemmed; 1 (5.2 oz.) block Boursin cheese; ½ medium onion, finely chopped; Cooking spray; 2 Tbsp. butter; Olive oil, for drizzling; ½ cup breadcrumbs, plus more for sprinkling; 2 cloves garlic, minced; 1 Tbsp. finely chopped parsley, plus more for garnish; ½ cup grated Parmesan cheese; Kosher salt, to taste; Ground black pepper, to taste