Drain the spinach and press out as much water as possible.
Combine spinach, cheese, and baking powder in a bowl.
Preheat the oven to 350.
Divide the phyllo dough sheets in half.
On a buttered sheet tray, lay down a sheet of phyllo, then wrinkle one sheet on half of it and the other sheet on the other half.
Drizzle with melted butter and repeat.
Once you finish half the dough, spread the spinach mixture safely all over. DO NOT PRESS DOWN HARD.
Repeat the process with the remaining dough.
Brush with egg wash and pre-cut all of your squares.
Top with sesame seeds and cook in the oven for 45 minutes to 1 hour or until the top is golden and crispy.
