Preheat oven to 300°. Line 9"x13" baking dish with parchment paper so that the paper extends about 2" over opposite sides of dish; spray with cooking spray.
In a large bowl, stir all ingredients until well combined. With wet hands, press ingredients into bottom of prepared dish and bake 25 minutes or until edges are golden brown. Rotate once halfway through baking. Cool completely in pan on wire rack.
Using overhanging sides of parchment paper, transfer the full bar to a cutting board; remove parchment paper and cut into 12 rectangles. Store bars in airtight container up to 1 week.
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Notes
Change up the flavor profile with any of our other delicious trail mix varieties.