Sauté the chorizo in its own fat, for 1 a minute, in a pan over medium heat
Add onion and tomato and cook covered for 5 minutes, stirring occasionally.
Add the tomato broth and stir.
Lower the heat to medium-low and add the eggs and stir.
Cook covered for 7-8 minutes, stirring occasionally.
Open the arepas and fill them as if a pocket.
Serve with the plantains.