Ingredients
1/2 c. diced celery
1/2 c. diced carrots
1/2 c. diced onion
2 cloves garlic, minced
1 c. freshly chopped parsley
3/4 c. bread crumbs
1/2 c. freshly grated Parmesan, divided
1 large egg
2 tbsp. ketchup
Kosher salt
Freshly ground black pepper
1 lb. ground beef
1/2 lb. ground pork
4 hero rolls, sliced lengthwise
1 c. marinara
1 c. shredded mozzarella
Preparation
Step 1Preheat oven to 400º. In a large bowl, mix together celery, carrots, onions, garlic, parsley, bread crumbs, 1/4 cup Parmesan, egg, and ketchup and season with salt and pepper until well combined. Add beef and pork, mixing together by hand until just combined (don’t over mix to maintain tender meatballs). Form 1 1/2" meatballs and place in an oven-safe dish or baking sheet. Do not overcrowd. Step 2Bake until meatballs are browned and no longer pink, 20 minutes.Step 3Meanwhile, toast rolls and warm marinara in a small saucepan. Spoon marinara over meatballs and top with mozzarella. Return to oven until cheese is melty.Step 4Place meatballs in toasted hero rolls and sprinkle with remaining 1/4 cup Parmesan before serving.
