The phrase "to toast the cashews" means to cook or heat the cashews in an oven or on a stovetop until they become golden brown and have a more roasted or crunchy texture. Full definition
Remove the bay leaves, season to taste with salt and serve with rice, lime slices and sprinkled with toasted cashews and cilantro. (cilantroandcitronella.com)
Heat a small frying pan and toast the cashew nuts in hot oil until golden brown. (flavorquotient.com)
I don't understand how to toast the cashews in this context. (vegkitchen.com)