Preheat oven to 375°F and place rack in the center of the oven.
Place cubed potatoes in a kettle ½ full of boiling water; cook until tender (~5 minutes); drain and set aside.
Place hamburger, garlic, onions, celery and carrots in a large skillet on medium heat; season with salt and pepper; break up hamburger and stir until the beef is browned and vegetables are softened. (if hamburger has high fat content, drain excess fat before proceeding)
Add chili powder, ground cumin, cinnamon, beef broth, cooked potatoes and peas; mix well and cook over medium heat until most of the liquid has been absorbed; remove from heat.
In a small bowl, beat to frothy 1 egg and stir in 1 tablespoon of water. Brush egg wash on outer edge of each crust.
Spoon ~2 tablespoons of filling onto each crust.
Fold each crust in half over the filling. Using a fork, firmly press the edges together; arrange on a baking sheet.
Brush the tops of each empanada with egg wash; bake for 30 minutes or until golden brown.
Nutrition Facts: Servings: 8; Amount per serving: Calories 207; Total fat 12.5g 19.2%; Saturated fat 4.1g 20.5%; Cholesterol 13mg 4.3%; Sodium 987mg 41.1%; Carbohydrates 20g 6.7%; Fiber 6.4g 45.7%; Sugars 2.3g 4.6%; Protein 8g 16.0%; Based on DV of 2000 calories per day