Preheat oven to 350 degrees F. Heat 1 tablespoon olive oil in medium-sized pan. Sauté onions until soft. Add spinach and garlic, and sauté with onion for a few minutes. Add parsley, dill, mint, nutmeg, and sugar, and sauté 2 to 3 minutes more. Set aside and let cool.

In small bowl, beat eggs and add feta. Add egg mixture to spinach, then add the remaining tablespoon of olive oil.

Brush 9-by-13-inch pan with clarified butter. Place 1 sheet of phyllo in pan and brush with butter. Repeat with 7 more phyllo sheets. Spread spinach mixture evenly atop phyllo. Then cover with 8 more phyllo sheets, brushing each one with butter before adding the next. Cut into triangles with serrated knife. Bake for 40 minutes until phyllo is golden brown.