Preheat and prep: Heat your oven to 400°F (200°C).
Lightly grease a baking sheet or line it with parchment for easy cleanup.
Mix the base: In a large bowl, whisk the egg with salt, pepper, garlic, onion, parsley, and red pepper flakes. Stir in the Parmesan and almond flour until it forms a thick paste.
Add moisture: Fold in the shredded, well-squeezed zucchini or ricotta. This step helps keep the meatballs soft without adding carbs.
Combine with turkey: Add the ground turkey.
Use a fork or your hands to mix gently until just combined. Don’t overwork—that can make meatballs tough.
Shape the meatballs: Scoop into 1.5-inch balls (about 18–22 meatballs). Lightly oil your hands to prevent sticking and keep the surface smooth.
Bake: Arrange on the baking sheet with a bit of space between each. Bake for 14–16 minutes, until just cooked through (internal temp 165°F/74°C).
Sauce and cheese (optional but great): Warm the marinara in a skillet or baking dish.
Nestle the meatballs into the sauce, top with mozzarella, and broil for 2–3 minutes until bubbly and golden at the edges.
Finish and serve: Sprinkle with extra Parmesan and torn basil. Serve over zucchini noodles, roasted spaghetti squash, or a side of garlicky sautéed greens.