01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Combine whole wheat flour, baking powder, and salt in a large bowl. Add Greek yogurt and mix with a spoon until a dough forms. Knead gently for 2-3 minutes until smooth.
03 - On a floured surface, roll dough to about 1/4-inch thickness. Cut into 6 rectangles.
04 - Beat eggs with milk, salt, and pepper in a medium bowl. Scramble in a nonstick skillet over medium heat until just set. Let cool slightly.
05 - Add turkey, cheese, and spinach to the eggs. Mix well.
06 - Divide the filling evenly among the dough rectangles, placing it on one half of each. Fold dough over the filling and seal edges with a fork.
07 - Transfer to the prepared baking sheet. Brush tops with beaten egg and sprinkle on sesame seeds or seasoning if desired.
08 - Bake for 15-18 minutes, or until golden brown. Cool slightly before serving.