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–+ servings
Monster Cookie Bars

Monster Cookie Bars That Make Every Bite a Sweet Adventure

Indulge in delightful Monster Cookie Bars filled with chocolate, peanut butter, and oats for a nostalgic treat that everyone will love.
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Prep Time 10 minutes
Cook Time 25 minutes
Cooling Time 15 minutes
Total Time 50 minutes
Servings: 12 bars
Course: Dessert
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Base
  • 1 cup Salted Butter Use unsalted if you're watching sodium.
  • 1 cup Peanut Butter Substitute almond butter for a nut-free option.
  • 1 cup Brown Sugar Consider coconut sugar for a lower glycemic index.
  • 1/2 cup Granulated Sugar Can swap with honey or maple syrup as a liquid alternative.
  • 2 large Eggs Use flax eggs for a vegan substitute.
  • 2 teaspoons Vanilla Extract Opt for pure vanilla for the best results.
  • 2 cups All-Purpose Flour Replace with gluten-free flour for a gluten-free version.
  • 3 cups Rolled Oats Quick oats create a smoother texture.
For the Leavening
  • 1 teaspoon Baking Soda Avoid substitution without careful measurement.
  • 1 teaspoon Baking Powder Ensure it's fresh for optimal results.
  • 1/2 teaspoon Salt Can omit if using salted butter.
For the Mix-ins
  • 1 cup Semi-Sweet Chocolate Chips Dark chocolate chips offer a richer taste.
  • 1 cup M&M’s Swap with chocolate chunks or different nuts for a fun twist.

Equipment

  • Oven
  • 9x9-inch baking pan
  • Mixing Bowl
  • Spatula
  • hand mixer

Method
 

Preparation
  1. Preheat your oven to 350°F (180°C) and line a 9x9-inch baking pan with parchment paper.
  2. In a large bowl, cream together the salted butter, peanut butter, brown sugar, and granulated sugar until smooth and fluffy.
  3. Add the eggs and vanilla extract, beating until well incorporated.
  4. Gradually mix in the all-purpose flour, rolled oats, baking soda, baking powder, and salt until a thick dough forms.
  5. Fold in the semi-sweet chocolate chips and M&M’s until evenly distributed.
  6. Pour the dough into the prepared baking pan and spread it evenly.
  7. Bake in the preheated oven for 25-30 minutes until golden brown and a toothpick comes out clean.
  8. Remove from the oven and let cool completely on a wire rack before slicing into squares.

Nutrition

Serving: 1barCalories: 250kcalCarbohydrates: 30gProtein: 5gFat: 12gSaturated Fat: 6gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gCholesterol: 30mgSodium: 140mgPotassium: 200mgFiber: 2gSugar: 18gVitamin A: 200IUCalcium: 20mgIron: 1mg

Notes

Keep a close eye on baking time to avoid overbaking. Allowing bars to cool before slicing helps maintain structure.

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