Pre-heat the oven to 375 degrees. Heat olive oil in a medium sized skillet.
Add chopped scallions and onions.
Saute for five minutes.
Add the spinach, cheese, salt and pepper. Mix well. Cool the mixture for a few minutes, removing it from heat.
Add the eggs and mix well. Set aside.
Meanwhile, spray an 8x8 baking dish with baking spray. Alternate filo sheets vertically and then horizontally covering the bottom of the dish and folding in the sides. Brush each sheet with olive oil. Spoon the spinach filling into the filo and cover with another four sheets of filo, brushing each with olive oil and folding in the sides.
Bake on 375 until golden for approximately 20-30 minutes.