In a food process add dates. Process until the dates form a paste. Add oats, peanut butter and cinnamon. Process until all items are combined and become like dough. .

Line a small baking sheet (with a lip) or shallow pan with parchment paper, press dough into pan. Cover with plastic wrap and refrigerate overnight.

Remove from pan and cut into small squares.

Melt chocolate chips and place into a disposable piping bag. Cut tip of bag and drizzle chocolate over bars. Refrigerate for 1-2 hour to set chocolate.