Directions:
1. Preheat oven to 375 °F. Lightly grease a pie dish or coat with non-stick spray.
2. To Make the Filling:
Melt butter in a large skillet over medium-high heat. Add garlic, onion, and mixed vegetables and cook, stirring occasionally, until onions become translucent, about 2 minutes. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in chicken broth and milk, and cook, stirring constantly, until slightly thickened, about 1-2 minutes. Stir in turkey; season with salt and pepper, to taste.
3. Carefully pour filling into greased pie plate. Top with puff pastry and gently cut 4 vents in the top of the crust with a sharp knife. Brush the top with a beaten egg.
4. Place into the oven and bake until the crust is golden brown, about 20-25 minutes. Let cool 5 minutes before serving.