PREPARATION:

1. Heat oil in large skillet over medium heat. Add onion and cook until tender. Add turkey; cook until turkey is no longer pink, stirring occasionally. Stir in garlic, oregano, chili powder and salt; set aside.
2. Preheat oven to 375°F. Lightly grease baking sheets. Prepare Egg Yolk Paint; set aside.
3. On lightly floured surface, roll 1 pie crust to 14-inch diameter. Using 3-inch Halloween cookie cutters, cut out pairs of desired shapes. Repeat with second pie crust, rerolling dough if necessary. Place 1/2 of shapes on prepared baking sheets. Brush edges with egg white. Spoon about 1 tablespoon taco mixture onto each shape. Sprinkle with 1 teaspoon tomato and 1 teaspoon cheese. Top with remaining matching shapes; press edges to seal. Decorate with Egg Yolk Paint.
4. Bake 10 to 12 minutes or until golden brown.