Dice the chorizo and cook in a large frying pan. Cook for about 3 minutes, allow chorizo to crisp up (don't overcook).
Remove meat from the pan, transfer to the tortilla, then add the cheese over the meat, fold over the tortilla.
Heat the pan with the excess oil from the chorizo once it begins to sizzle, add your quesadilla and press down on each side until each side is golden brown and the cheese begins to ooze out. Be careful not to burn the tortilla.
Cut in half, serve with some sour cream and enjoy!