01 -
Preheat your oven to 375°F (190°C).
02 -
In a large bowl, combine the ground beef, chopped spinach, breadcrumbs, egg, Parmesan cheese, garlic powder, oregano, salt, and pepper. Mix until well combined.
03 -
Shape the mixture into 1-inch meatballs and place them on a baking sheet lined with parchment paper.
04 -
Bake the meatballs in the preheated oven for 18-20 minutes, or until fully cooked (internal temperature should reach 165°F / 74°C).
05 -
While the meatballs bake, heat olive oil in a large skillet over medium heat. Add the marinara sauce, chopped spinach, dried basil, salt, and pepper. Stir to combine and simmer for 5-7 minutes.
06 -
Once the meatballs are done, transfer them to the skillet with the sauce and gently toss to coat. Simmer for an additional 5-10 minutes, allowing the flavors to meld together.