Place all ingredients except chocolate chips in food processor with S blade in place and pulse until mixture looks like large, moist crumbs.

Transfer to a small casserole dish lined with parchment and use spatula or clean hands to firmly press mixture until it's evenly spread across the pan. 

Refrigerate until firm, then slice into bars. 

For best results, store in the fridge or freezer - I place bars into individual plastic baggies, then place the bags in a gallon size zipper bag in the freezer. We just grab and go - no need for defrosting!