First, in a heavy bottomed pan, use a little spray of oil and sauté the onion.
Next, add in the mushrooms, and sauté for another 5 minutes.
Add in the zucchini, sauté for another 5 minutes.
Lastly, add in the cashew milk, bring to a boil, lower to a simmer, and cook for about 10 minutes, stirring often. The cashew milk will thicken well.
Season to taste with salt. Serve with freshly ground pepper.