Preheat the oven to 350 degrees F. Grease a large baking sheet, and set aside.
In a large mixing bowl, add the softened cream cheese, spinach, feta, ½ cup Mozzarella, parsley, green onions, salt, and pepper. Mix until well combined.
8 ounces cream cheese, 10 ounces frozen spinach, 1/2 cup Feta cheese crumbles, 3 Tablespoons fresh parsley, 3 Tablespoons green onions, 1/2 cup Mozzarella cheese + more for filling, Salt to taste, Black pepper to taste
Spread a layer of phyllo dough on a clean surface. Brush with melted butter, and layer a second piece of phyllo on top. Brust with butter again, and slice the dough into 3 strips.
1 pound phyllo dough, 1/2 cup unsalted butter
Add 2 tablespoons of the spinach mixture to the bottom of each sheet of dough. Add 1 tablespoon Mozzarella on top.
Starting with the end of the dough containing the filling, fold the corner of the dough to form a triangle. Continue folding, maintaining the triangular shape.
Place the spanakopita triangle on the prepared baking sheet. Repeat the process until all the dough and filling have been used.
Brush the triangles with butter, and sprinkle sesame seeds on top.
Black sesame seeds for garnish
Bake 25-30 minutes or until the triangles are golden brown.
Store in an airtight container in the fridge for 2-3 days.