In a large mixing bowl, combine ground turkey, chopped spinach, crumbled feta cheese, chopped onion, minced garlic, beaten egg, and almond flour. Gently mix until just combined.

With clean hands, divide the mixture into equal portions and shape each into round patties about ½ inch thick.

Heat a large skillet over medium heat and add cooking oil. Allow the oil to heat for about 1 minute.

Carefully place the patties in the skillet and cook for 5-6 minutes without moving them.

Gently flip each patty using a spatula and continue cooking for an additional 5-6 minutes or until they reach an internal temperature of 165°F.

Transfer the cooked burgers to a plate and let them rest for about 3-5 minutes before serving.