Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.

If you’re using fresh spinach, chop it finely and sauté it in a little olive oil for 1-2 minutes to remove excess moisture, then allow it to cool slightly.

In a large mixing bowl, cream the soft butter and crumbled feta together until smooth. Beat in the egg until well combined.

Gradually mix in the flour, baking powder, salt, black pepper, and garlic powder. Mix until you form a dough. If you’re using fresh herbs, fold them in at this stage.

Gently fold the chopped spinach into the dough, ensuring it’s evenly distributed. If using grated Parmesan cheese, add it now!

Using a spoon, scoop out portions of dough and shape them into small rounds, placing them on the prepared baking sheet. Flatten them slightly to form cookie shapes.

Bake the cookies in the preheated oven for about 15-20 minutes or until golden brown at the edges.

Allow them to cool slightly on the baking sheet before transferring them to a wire rack. Serve warm or at room temperature.