Preheat the oven to 400°F (200°C).

In a small bowl, soak the bread in milk for 5 minutes. Mash it to form breadcrumbs.

In a large mixing bowl, combine the breadcrumbs, chopped onion, grated carrot, minced garlic, ground beef, ground pork (or more beef), egg, garlic powder, smoked paprika powder, parsley seasoning, black pepper, and salt. Mix well using your hands.

Line a baking tray with parchment paper and spray with avocado oil.

Form small meatballs, about 1 tablespoon each, and place them on the prepared baking tray.

Bake the meatballs in the preheated oven for 20 minutes, then broil for the last 2 minutes for a golden crust.

While the meatballs are baking, prepare the sauce. In a large skillet, combine the tomato sauce, heavy cream, chopped parsley, garlic powder, and smoked paprika powder. Cook over medium heat until the sauce thickens, stirring occasionally, about 15-20 minutes. Season with salt and pepper to taste.

Once the meatballs are done, add them to the sauce in the skillet. Simmer covered on low heat for 5 minutes to allow the flavors to meld together.

Serve the creamy meatballs with mashed potatoes or rice.