This filling is inspired by the popular Mexican papas con chorizo, a combination of potatoes and chorizo. Make sure to get fresh uncooked chorizo, which is sold loose or in links.
03Combine the tomatoes, scallion, jalapeno and cilantro in a bowl and season with salt. Warm the tortillas in a dry skillet or wrap in a damp towel and warm in the microwave, about 1 minute. Fill with the squash and chorizo mixture and sprinkle with the cheese and salsa. Top with sour cream and/or guacamole, if desired.