"Who doesn't love a good cookie bar? These Cake Mix Reese's Chip Cookie Bars are loaded with peanut butter goodness and are so easy to make, starting with a boxed yellow cake mix!..."
INGREDIENTS
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1 pkg (15.25 oz) yellow cake mix (I like Duncan Hines)
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1 large egg
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6 Tbsp. butter, melted
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1 1/2 tsp. pure vanilla extract
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3/4 c. Reese's Peanut Butter Chips (for including in the bars), plus 1/2 c. for melting on top