Melt 2 sticks of butter in a small sauce pan In another pan melt 1 stick of butter add crushed garlic cloves, salt, nutmeg and flour. Cook till fragrant about 3-4 minutes.
Now add the milk and cook it for 4-5 minutes. While your white sauce is simmering crumble up the feta and mix it with the egg and add it to the saucepan with the white sauce.
Now add the other cheeses and cook it for a few more minutes take it off the stove and add the spinach and parsley.
Now set up your work station. Take the dish you want to bake the Spanakopita in and use the butter you melted and butter your dish.
Now layer the phyllo sheets on it. You have to butter each sheet do this with about 10 sheets.
Now add the cheese and spinach mixture and again layer the sheets on top of the cheese mixture. Butter each sheet. Score your dish like a grid.
Bake at 375 till golden brown