Heat 1 tbsp of the 2 tablespoons olive oil in a deep skillet and saute the 1 small sweet onion (diced) and 4 cloves garlic (minced) for about 3-4 minutes. Set aside.
In a small bowl, combine the 1/2 cup milk of choice, 1/3 cup breadcrumbs, and seasonings (1 teaspoon Italian seasoning, 1/2 teaspoon dried thyme, 1 teaspoon Kosher Salt, and 1/2 teaspoon ground Pepper). Allow it to sit for 5 minutes until thickened.
In a large bowl, add the 2 pounds lean ground beef, 2 large eggs, then add the sauteed onion and garlic, 2 tablespoons fresh parsley, 1/3 cup grated Parmesan cheese, and 2 teaspoons Worcestershire sauce. Also, add the milk-breadcrumb mixture, and stir well to combine.
Form into 1-tablespoon meatballs. Coat them by rolling each one in the 1/3 cup flour. Heat the remaining oil in the same deep skillet and cook the meatballs until golden on all sides.
Add the 56 ounces marinara sauce and 1 tablespoon balsamic vinegar, then cook over very low heat for 12-15 minutes. Meanwhile, bring a large pot of salted water to the boil. Cook the 1 pound whole wheat spaghetti according to package directions.
Drain the spaghetti, then stir the meatballs into the sauce once it's done. Garnish with Chopped parsley or Grated Parmesan and enjoy!
Notes
Breadcrumb mixture needs time to soak for better binding.
Avoid overmixing the meat to keep the meatballs tender.
Use a cookie scoop for uniform meatballs.
Brown meatballs before simmering in sauce.
Keep sauce at a gentle simmer to maintain juiciness.
Don’t forget to salt pasta water to enhance flavor.
Ground turkey or chicken can replace beef.
Plant-based milk works as a dairy-free substitute.