Preheat your oven to 180°C (350°F).

In a pan, sauté chopped onions until translucent. Add spinach and cook until wilted. Allow excess moisture to drain.

In a bowl, whisk eggs and season with salt, pepper, and a pinch of nutmeg.

Crumble feta cheese into the egg mixture and add the sautéed spinach and onions. Mix well.

Layer filo sheets in a greased baking dish, brushing each sheet with melted butter or oil as you go.

Pour the egg and spinach mixture over the filo layers.

Sprinkle grated cheddar cheese on top.

Bake in the preheated oven for 25-30 minutes or until the quiche is set and the filo is golden brown.

Allow it to cool slightly before slicing.

In a large bowl, combine lettuce, tomatoes, cucumber, and bell peppers.

In a small bowl, whisk together mustard, mayo, lemon juice, and oil to make the dressing.

Pour the dressing over the salad and toss until well coated.

Serve your Mixed Green Salad with Mustard Mayo Dressing alongside the Filo Quiche. Enjoy!