In a large skillet over medium-high heat, cook the chorizo, breaking it up with a wooden spoon as it cooks, for about 8-10 minutes or until fully cooked and slightly crispy.
While the chorizo is cooking, warm the tortillas. Wrap them in a damp paper towel and microwave for 30 seconds, or heat them individually in a dry skillet for about 30 seconds per side.
To assemble, place a spoonful of cooked chorizo on each warm tortilla and top with a sprinkle of diced onion.
Serve immediately and enjoy!
Notes
If the chorizo is very fatty, you may want to drain some of the excess fat after cooking.Red onion can be used for a slightly milder, sweeter flavor.Refrigerate the leftover cooked chorizo in an airtight container for up to 5 days.