Meatball Sub

Ingredients

• 1 tbsp canola oil (15 mL)
• 1 cup onion, finely chopped (250 mL)
• 2 cloves garlic, minced
• ½ lb lean ground beef (226 g)
• 1 (19 oz) can black beans, drained, rinsed and finely chopped (540 mL)
• 1 egg
• ½ cup whole wheat breadcrumbs (125 mL)
• ½ cup Parmesan cheese, grated (125 mL)
• ¼ cup fresh parsley, chopped (60 mL)
• 1 tsp dried oregano (5 mL)
• ¼ tsp each salt and fresh cracked pepper (1 mL)
• 6 6-inch (15 cm) whole wheat sub buns
• 2 tbsp butter, melted (30 mL)
• 1½ cups prepared marinara sauce (355 mL)
• 1 cup mozzarella cheese, grated (250 mL)