If you're using hard chorizo, remove from package and cut into slices and then cube. Set aside. If you are using ground chorizo, remove from casing into bowl, set aside.
In a skillet, heat 2 tbsp of oil over medium heat and add chopped onion. Cook for 2 minutes. Add the chopped garlic and cook for 1 minute.
Add the beef or chorizo. If it is ground beef/chorizo, cook for about 7 minutes.Note: The ground chorizo may be too oily, just put mixture through a mesh strainer to remove excess oil. If using hard chorizo, cook for 5 minutes or until the edges are golden brown.
Mix garlic, onions and beef/chorizo all together.
Heat refried beans for 1 minute in microwave, so they will be easier to spread on tortillas.
Taking one flour tortilla at a time, spread about 2 tbsps of the refried beans on tortilla.
Follow with chorizo, cheese and scallions. Top with another tortilla. Repeat full process until you have used all the mixture.
Heat and grill tortillas in a skillet over medium heat for a minute or so on each side or until cheese has melted. Note: Could use non stick spray or a little bit of oil for grill pan or skillet.
Take each tortilla and cut into quarters. Serve immediately with salsa of your choice and sour cream. Enjoy!