This is a simplified version of Heidi's Unda-style quesadillas. See her post for better photos and good topping ideas! This is super fast- great for a breakfast as you can eat it with your hands.
In hot pan oiled with butter or oil, start to fry up a beaten egg. When it is almost ready to set on the top, press a corn tortilla into the egg. Flip over, cook on both sides until starts to puff and browns.
Fill with salsa. Fold and eat like a sandwich.