This is the 14196th most frequent Russian word.
орешками
"Орешками" means "nuts" (in the instrumental plural form) in English.
Here 'орешками' means 'with nuts,' instrumental plural form, showing accompaniment or additive quality.
На завтрак я часто ем йогурт с орешками.
For breakfast, I often eat yogurt with nuts.
In this sentence, 'орешками' is the instrumental plural form, indicating the item being consumed.
Ребята угощались орешками из кулинарного набора.
The kids were enjoying nuts from the culinary set.
Here 'орешками' is again instrumental plural form, used to specify what is being shared or given.