Lightly grease a 9x13 rimmed baking sheet with cooking spray and line with parchment paper, leaving excess paper on edges.
Combine all ingredients in a large bowl and press firmly into prepared pan. Bake for 10 minutes in preheated 350 degree oven. Pull on parchment paper to remove from pan and cut into 24 bars while still warm-six on one side and four on the other.