1. Add the beef, sausage, parsley, garlic, bread crumbs, egg, onion, salt & pepper in a large bowl. Use your hands to combine the meatball ingredients until fully combined, do not overwork the mixture. Once all ingredients are combined, roll into 30 meatballs, about 1 ½ to
2 tablespoons each. (Tip wet your hands before rolling meatballs, this makes sure the ground meat doesn’t stick to your hands)
2. Heat a pan on medium high heat. Add 2 tablespoons of your compound oregano butter to the pan. (if you don’t have compound butter you can use regular butter or garlic butter) Sear the meatballs until each side has a nice golden crust. Keep adding butter to the pan while the meatballs sear and coating each meatball in butter. Remove meatballs from the pan and set aside.
3. Add marinara and arrabbiata sauce to a large saucepan. Add 2 tablespoons of oregano butter or garlic butter and 2 sprigs of fresh oregano. Bring to a low simmer. Add the meatballs to the pan and cover with a lid. Cook for 15 minutes. Remove the lid and cook for another 15 minutes.
4. Heat the oven to 375 degrees F
5. Brush the inside of the hoagies with melted oregano butter and arrange on a baking sheet. Add 3 meatballs to each hoagie and stop with extra sauce. Top each sub with shredded mozzarella and shredded parmesan cheese. Bake for 10 minutes and broil for 1-2 minutes until cheese is melted and starts to blister.
Garnish with chopped basil and enjoy!