Place the spinach in a tea towel and squeeze out the excess moisture. Transfer to a large bowl. Add the feta, egg, onion, garlic, salt, and pepper and mix until well combined.
Sprinkle a work surface with about 2 or 3 tablespoons of almond flour. Roll the dough out into a large square about 16 inches by 16 inches. Using a very sharp knife or a pizza wheel, cut into 16 even squares.
Mound about 1 tablespoons of the spinach mixture into the center of each square. Fold the dough square over diagonally to make a triangle shaped pie. If the dough breaks or cracks when folding, simply pinch back together and shape around the filling.
Place the triangles on the prepared baking sheet and make a small slit in the top of each to allow the steam to escape. Bake 20 minutes, until golden brown. Remove and let cool on the pan.
Notes
Serves 16. Each serving has 1.95g NET CARBS.Food energy: 123kcal Total fat: 9.47g Calories from fat: 85 Cholesterol: 26mg Carbohydrate: 3.41g Total dietary fiber: 1.46g Protein: 5.65g