Preheat oven to 375°F and cook lasagna noodles according to package instructions until al dente.
In a skillet over medium heat, brown the ground turkey with minced garlic, sea salt, and black pepper until fully cooked.
In a medium bowl, stir together the cottage cheese, half of the crumbled feta, fresh spinach, and dried oregano until well combined.
Spread a thin layer of marinara sauce on the bottom of a small oven-safe baking dish.
Place one noodle in the dish, followed by half of the turkey, half of the spinach-cheese mixture, and a layer of marinara.
Repeat the layers with the remaining noodle, turkey, and spinach mixture, then top with the remaining marinara and the rest of the feta.
Bake for 20 minutes until the sauce is bubbling and the flavors have melded together beautifully.