Heat the corn tortillas over a griddle. Once ready to serve, spoon some of the enchilada sauce on the plate and on top of the tortilla.
Put a strip of the diced onion and cheese on top of the sauce on the corn tortilla. Roll the tortilla or fold over. Spoon more of the enchilada sauce on top of the tortilla.
Sprinkle additional cheese and onion on top of the tortilla. Drizzle Crema Mexicana on top and green onion if using. Serve immediately. Enjoy!