Cook Peanut Butter Bite Size Cookies according to directions. Allow to cool. In a microwave safe bowl, melt chocolate chips with vegetable oil on 50% power in 30 second intervals, stirring after each interval until melted and smooth. Pour melted chocolate into a small ziploc bag and seal. Snip a tiny tip off the edge and drizzle chocolate over mini peanut butter cookies. Allow chocolate to harden in refrigerator or on counter top (it just takes longer), or enjoy with warm melted chocolate if you can't wait =). Store cookies in an airtight container.