Spray cashews evenly with coconut oil spray. Spread cashews evenly across a baking sheet in a single layer for even roasting.
Roast for 5 minutes in the oven then stir/move them around with a spatula. Roast for another 3 mintues and stir/move them around with a spatula. Repeat every 3 minutes until golden brown. Remove from oven.
Add salt to water in a spray bottle and stir to dissolve well. Spray salt water directly onto warm cashews and allow salt water a few seconds to dry. Stir cashews around the pan for even coating and repeat spraying with salt water a few times.