Prepare the stuffing: heat the oil in a frying pan.
Add the onion and ají amarillo, then fry for a few minutes.
Add the garlic, beef, cumin, salt and pepper.
Pour in the beef broth and simmer until the meat is tender and the sauce is reducing.
The stuffing should remain juicy, but not runny. Let cool completely before garnishing the empanadas.
Prepare the dough: mix the flour, baking powder, sugar and salt.
Add the cold butter and sand with your fingertips until you get a sandy texture.
Add the cold water gradually and knead just enough to form a homogeneous dough.
Form into a ball, cover and leave to rest for 30 minutes in the refrigerator.
Roll out the dough on a lightly floured work surface.
Cut out circles of 6 cm for mini-empanadas or 10 to 12 cm for a more classic format.
Place a spoonful of cold filling in the center of each circle. Optionally add a little hard-boiled egg, olive or raisin.
Lightly brush the edges with beaten egg.
Fold into a half-moon, seal with fingers or a fork, then place on a baking sheet lined with parchment paper.
Brown the empanadas with the remaining beaten egg.
Bake at 180°C for 15 to 20 minutes, until the empanadas are golden brown.
Sprinkle lightly with icing sugar when you remove from the oven.
Serve hot or warm with lime wedges.