In a large skillet brown ground beef, red onion and Taco Seasoning Spice Blend over medium heat, breaking up to crumble.
Add the refried beans and stir in cheese. Set aside to cool slightly. Meat mixture will thicken.
On a lightly floured surface, roll out a pie crust to about 1/8-inch thickness. Using a 4 inch round circular mold (I used the refried beans container lid) cut 6 circles, re-rolling dough if needed. Repeat with other pie crusts for 24 circles.
Top each dough circle with about 2 tablespoons of the filling. Fold in half and press edges with a fork to seal. (You can use a 4-inch mold or dumpling press if you have one). Place on a lined baking sheet. (See Note 3)
Brush the tops and sides with beaten egg then pierce the top of each with a fork. Bake for about 15 minutes or until golden brown.