Cashews are a softer nut and can burn very quickly if not watched closely. I prefer to cook at 350 for a shorter time, but you may go down to 300 degrees and plan on cooking between 12-15 minutes at that temp.
I tried making these roasted nuts a variety of different ways and was having trouble keeping the coating on (once they cooled, it didn't stick). I found that adding a little sugar and putting the powder on BEFORE cooking (in contrast to many recipe) works best. The powder will brown a little.
Change it Up:
The sky's the limit on flavor! Some of my other favorites to date are: White Cheddar or Cheddar flavored (Kernel's brand). Archer Farms (Target's brand) also has some intriguing flavors, although I've been unable to find them on my local store shelves to date.