Place the ground beef and all the spices in a bowl. Mix until well combined. Refrigerate for 30 minutes.
Over medium heat, heat a pan and melt the butter. Add and sauté onion until translucent.
Then, add the ground beef. Cook until brown in color. Season with salt and pepper. Remove excess fat. Remove from heat and top with green onion. Let it cool and refrigerate again for 30 minutes.
Prepare the empanada dough by laying it flat on the kitchen top or baking mat. Use a cookie cutter or the mouth of the glass in cutting the dough.
Place the beef filling in the center of each round dough. Top it with boiled egg and olives and then fold the dough into half.
Brush the edges of the dough using egg white and use fork to crimp all the edges and seal it.
Place on the baking sheet lined with parchment paper. Once you finished all the dough and filling. Brush the top of empanada with egg yolk.
Bake for 20-40 minutes until the empanada is golden brown.