Big Spicy Meatballs

Name: Big Spicy Meatballs
Ingredients: For the meatballs:; 4 lbs. lean ground beef; 1 medium onion minced; 2 slices soft bread crusts removed and torn into small pieces; 5 cloves garlic minced; 2 eggs; 1⁄ 2 cup chopped fresh flat-leaf parsley; 1⁄ 4 cup olive oil; 1 tablespoon Italian seasoning; 1 tablespoon kosher salt; 1 cup grated Parmesan; 2 teaspoons black pepper; For the topping (optional):; 1 lb. dry spaghetti; 2 cups marinara sauce; 1 1⁄2 cups ricotta (from a 15-ounce container); 1/2 cup grated Parmesan; 1 teaspoon black pepper