Step 1

Place the green pumpkin seeds in a high speed blender (a high speed bullet blender is ideal). If using a coffee grinder, only grind 1/3 cup or 1/2 cup at a time.

Step 2

Process for 30 seconds. Scrape down sides repeat, until the seeds resemble a mostly fine flour with some larger pieces throughout (avoid over-processing--the flour will turn into seed butter).

Step 3

Transfer the flour to a mesh sieve set over a bowl. Sift the flour to remove any of the large pieces (stir it around to force it through the sieve). Reprocess the large pieces to a fine flour and sift again.