"Monster cookie bars are ooey gooey peanut butter, oatmeal, and M&M filled dessert bars that are bound to put a smile on your face!..."
INGREDIENTS
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½ cup butter (softened)
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½ cup brown sugar (packed)
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½ cup granulated sugar
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1 egg
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1 teaspoon vanilla
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½ cup creamy peanut butter
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½ cup all purpose flour
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½ teaspoon baking soda
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1 ½ cups quick oats
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1 cup semisweet chocolate chips
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1 cup M&Ms (plus more for topping)