To dream of cashews represents feelings about a goal or situation being too easy to have. Feelings about easily having a smooth or problemless outcome.
Negatively, may reflect a naive belief that a challenge or problem will be solved easily. Thinking that if you keep doing something that a difficult problem will be really easy to solve. Subjecting yourself to something dangerous while feeling that it isn’t serious.
To dream of a poisoned may reflect feelings about choices that were meant to be too easy turning on you. Feeling that something that was meant to be too easy is now totally incompatible with your goals.