Step 1

In the bowl of a large food processor, pulse the nuts until finely ground (but stop before they start turning to nut butter!). Add the oats, raisins, chia seeds, cinnamon, and nutmeg to the nuts; pulse five (1-second) pulses to combine. Add the peanut butter, honey, and vanilla to the mixture; pulse until all of the ingredients are well blended, scraping the sides of the bowl as necessary.

Step 2

Scrape the mixture into an 8- by 8-inch baking dish; firmly press into an even layer. Cover and chill for two hours or until firm. Use a knife to slice into bars. Store leftovers in an airtight container in the refrigerator.