Step 1

Preheat oven to 250f.

Step 2

Remove and discard stems and seeds of chiles.

Step 3

Place chiles on a baking tray/sheet pan and bake for 10-15 minutes to dry them out further. They should be more brittle and less pliable.

Step 4

Remove from oven and cool. Working in batches if necessary, place extra-dried chiles into a grinder and pulse to a fine powder.

Step 5

Store in an airtight container and use as needed.