For a richer flavor, use dark brown sugar instead of light brown sugar. Add a sprinkle of sea salt on top of the melted chocolate layer to enhance the sweetness. Feel free to substitute other types of chocolate chips or nuts based on your preference. Store the cooled cookie bars in an airtight container at room temperature for up to 5 days.
Monster Cookie Bars with Peanut Butter and Oatmeal
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PREP TIME10 mins
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COOK TIME13 mins
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TOTAL TIME2 hrs 23 mins
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SERVING20 People
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VIEWS10
Dive into a delightful symphony of textures and flavors with these irresistible Monster Cookie Bars. A medley of peanut butter, oats, and sweet morsels baked to golden perfection, these bars are guaranteed to be the star of any occasion. Quick, easy, and utterly delicious!
Ingridients
Adjust Servings
Nutrition
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Carbohydrate35 g
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Cholesterol16 mg
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Fiber3 g
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Protein5 g
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Saturated Fat7 g
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Sodium89 mg
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Sugar20 g
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Fat15 g
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Unsaturated Fat0 g
Follow The Directions
01
StepPreheat the oven to 400 degrees F (200 degrees C). Butter a 9x13-inch baking pan. (5 minutes)
02
StepIn a large bowl, combine the brown sugar, melted butter, corn syrup, 1/4 cup peanut butter, and vanilla extract. Mix well until smooth. Gradually add the quick-cooking oats, mixing until everything is evenly incorporated. Press the mixture firmly into the prepared baking pan. (10 minutes)
03
StepBake in the preheated oven until the edges are golden brown and the center is set, approximately 12 to 14 minutes. Remove from the oven and let cool for about 4 minutes. (18 minutes)
04
StepWhile the bars are cooling, prepare the topping. In a microwave-safe bowl, combine the chocolate chips, butterscotch chips, and 1/3 cup peanut butter. Microwave in 15-second intervals, stirring after each interval, until the mixture is smooth and completely melted, approximately 1 to 3 minutes. (5 minutes)
05
StepSpread the melted chocolate mixture evenly over the warm cookie bars. Let the bars cool completely before cutting into squares. This will take approximately 2 to 3 hours, or you can speed up the process by refrigerating them. (120 minutes)
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Verdie Luettgen
Jun 28, 2025These bars are a huge hit! They're so easy to make and everyone always asks for the recipe.
Chester Moore
Jun 22, 2025I added some chopped pecans to the oat mixture and it was fantastic! Definitely making these again.
Clarabelle Lockman
Jun 15, 2025The peanut butter and chocolate combination is divine! I chilled them for a quicker set and they were perfect.