Blue Cheese stuffed meatball sandwich | Castello®️

Ingredients

• ¾ cups italian seasoned breadcrumbs
• ¾ cups skim milk
• 3 eggs whites, beaten
• 1½ tbsp chopped fresh fresh parsley
• 1½ pounds beef mince
• 3 oz , or about 3/4 of a package, chilled Castello® Traditional danish blue, cut into 1/3-inch cubes
• 2 tsp vegetable oil
• 2¾ cups marinara sauce
• ¾ cups water
• salt, to taste
• pepper, to taste
• 2 (7-ounce) petite baguettes, each cut in half lengthwise, then crosswise into 3 sections
• 1 tbsp chopped fresh fresh parsley
• ¼ white onions, sliced
• 1½ cups firmly packed spring greens