In a bowl, mix the thawed and drained spinach, chopped onions, parsley, shredded cheese, cottage cheese, salt, black pepper, red pepper, and three eggs.
Take the thawed phyllo dough out of the fridge. Open one packet; put the other back in the fridge.
On each tray, lay two sheets of phyllo dough. Brush with melted butter. Add two more sheets of phyllo, brush with butter again, then two more sheets.
Divide the spinach mixture equally among the three trays.
Layer two more sheets of phyllo, brush with butter, add another two sheets, brush with butter, and top with the final two sheets, cut into triangles.
Brush an egg wash on top of all the spinach pies.
Bake at 375°F for 30 minutes or until golden brown.
Enjoy one tray for dinner and freeze the other two for later!