In a food processor or blender, pulse nuts until finely ground (but stop before they start turning to nut butter!). In a large bowl, combine ground nuts, oats, raisins, peanut butter, honey, vanilla, cinnamon, and nutmeg. Mix well until completely blended (if possible, use an electric stand mixer to make it quicker/easier to fully incorporate the peanut butter and honey). Use a small cookie scoop or spoon to scoop mixture and roll into 1-inch balls (or whatever size you would like them). Store in an airtight container in the refrigerator.