Mushroom and Chicken Crepe Packets

Name: Mushroom and Chicken Crepe Packets
Ingredients: 1 cup milk; 0.66666668653488 cup all-purpose flour; 3 eggs; 0.5 teaspoon salt; 1 teaspoon butter, or as needed; 3 cups sliced fresh mushrooms; 4 tablespoons chopped onion; 2 cloves garlic, minced; 0.5 cup ricotta cheese; 2 tablespoons cream cheese; 2 cups chopped rotisserie chicken meat; salt and ground black pepper to taste; 0.5 cup freshly grated Parmesan cheese; 1 tablespoon butter; 1 tablespoon all-purpose flour; 1 cup chicken broth; 2 tablespoons chopped fresh parsley