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+ servings

Candy Oreo Monster Blondie Bars

Soft and chewy loaded Candy Oreo Monster Blondie Bars - a great way to use up any leftover Halloween Candy.
Course Dessert
Cuisine American
Keyword blondie brownies, blondie recipe, monster brownies
Prep Time 10 minutes
Cook Time 22 minutes
Total Time 32 minutes
Servings 16 bars
Calories 259 kcal


  • cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • cups packed brown sugar can substitute with coconut sugar
  • 12 tablespoons unsalted butter melted and cooled
  • 2 large eggs room temperature
  • 1 1/2 teaspoons pure vanilla extract
  • 1/3 cup M&M's or chocolate chips
  • 1/4 cup Twix chopped (or other favorite candy bar)
  • 8-10 Oreo cookies coarsely chopped


  1. Preheat oven to 350 degrees Fahrenheit. Line an 8-inch baking pan with aluminum foil, leaving a slight overhang on the sides.

  2. In a large mixing bowl, whisk melted butter with brown sugar. Add egg and vanilla and mix until combined.
  3. In a separate medium bowl, whisk together flour, baking powder and salt. Slowly add the dry ingredients to the wet and stir together until just combined.
  4. Fold in the half of the M&M's half of the chopped Twix bars and half of the Oreo cookies.
  5. Spread dough evenly into prepared baking pan and smooth out with an offset spatula or clean hands.
  6. Evenly place more candy and Oreo cookies on top.
  7. Bake for 22-25 minutes or until lightly browned on top. Do not overbake. Remove from the oven and allow to cool completely before cutting into squares.

Recipe Notes

Leftover bars can be stored in an airtight container in the refrigerator or at room temperature for up to 1 week.

Blondie base barely adapted from America's Test Kitchen

Nutrition Facts
Candy Oreo Monster Blondie Bars
Amount Per Serving (1 2x2 inch square)
Calories 259 Calories from Fat 99
% Daily Value*
Fat 11g17%
Saturated Fat 6g30%
Cholesterol 43mg14%
Sodium 83mg3%
Potassium 88mg3%
Carbohydrates 37g12%
Sugar 25g28%
Protein 2g4%
Vitamin A 300IU6%
Calcium 43mg4%
Iron 1.4mg8%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.