Start by preheating your oven to 180°C (350°F). In a large bowl, combine the self-raising flour with a pinch of salt. Gradually add water until the mixture forms a dough. Knead the dough for a few minutes on a floured surface until smooth. Once you’re happy with the dough's consistency, wrap it in plastic wrap and let it rest for at least 30 minutes.

In a skillet, heat a little olive oil (if used) over medium heat. Add the frozen spinach, stirring until it’s fully thawed. If using fresh spinach, chop and sauté until wilted. This typically takes about 3-4 minutes. Drain any excess moisture to prevent a soggy pie.

In a large bowl, combine the sautéed spinach with crumbled feta cheese and chopped dill. If you’re using garlic powder, add it in now. Mix well until everything is incorporated. The flavors meld beautifully.

After resting, take the dough and divide it into two parts: one for the base and one for the top. On a floured surface, roll out the first piece into a circle, around 1 cm thick. Transfer this to a pie dish, ensuring it covers the sides.

Spoon the spinach mixture into the pie crust, spreading it evenly. Roll out the second piece of dough and cover the filling. Pinch the edges to seal the pie. If you like, you can use a fork to create a decorative edge. Make a few slits on the top to allow steam to escape during baking.

Brush the top with a little olive oil or water for a golden finish, and sprinkle sesame seeds for added crunch. This step is important to enhance the pie’s texture and aesthetics.

Place the pie in the preheated oven and bake for approximately 30-35 minutes, or until the top is golden brown. The aroma will fill your space, enticing everyone to gather around.

Once removed from the oven, let the pie cool for about 10 minutes. This waiting period helps the pie set, making it easier to slice. Serve warm or at room temperature, and watch as it disappears from your table.