Puree' until very smooth in blender. Heat gently. Stir from the bottom as you serve.
If you want a thicker, creamier sauce that goes a little further make a roux: melt 3 Tab butter wisk in 3 Tab Flour Cook, whisking over low heat 2-5 min. Whisk in heated cashew puree', and wook an additional 8-10 minutes.
Serve over steamed or sauteed vegetables and/or grains or fish. Top with scallions.