Mix all the ingredients except chocolate chips in a medium bowl thoroughly.
Add ¼ cup of chocolate chips until combined.
Line a 8 x 8 inch baking pan
with parchment paper.
Spread mixture into pan and smooth out evenly.
Melt remaining two tablespoons chocolate chips in microwave or sauce pan and drizzle over bars with a spoon.
Place into freezer for at least 30 minutes to set.
Remove from freezer.
Cut into 12 bars. Store in airtight container in the freezer or refrigerator.