Candy Oreo Monster Blondie Bars are perfectly soft, chewy and loaded with M&M’s, Twix & chopped Oreos. The best part about these is all the fun Halloween Candy you can re-use.

If you’re like me and trying to find ways to reduce that leftover candy stash, tossing them into some baked goodies is an easy and delicious way to help get rid of some.
I made these Candy Oreo Monster Cookie Bars a few weeks ago and we couldn’t resist throwing in whatever all the half-opened packages of treats we could find.


Various Add-ins
Next are the fun add-ins. You can totally use whatever add-ins you like. For these Candy Oreo Monster Blondie Bars, we used:
- Some bright and colorful M&M’s
- Twix
- Chopped up Oreo cookies.

Best of all, they are a great way to use up any leftover candy taking over your pantry and everyone will love this fun and delicious treat!


- 1½ cups all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon salt
- 1½ 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
Preheat oven to 350 degrees Fahrenheit. Line an 8-inch baking pan with aluminum foil, leaving a slight overhang on the sides.
- In a large mixing bowl, whisk melted butter with brown sugar. Add egg and vanilla and mix until combined.
- 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.
- Fold in the half of the M&M's half of the chopped Twix bars and half of the Oreo cookies.
- Spread dough evenly into prepared baking pan and smooth out with an offset spatula or clean hands.
- Evenly place more candy and Oreo cookies on top.
- 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.
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
You might also like:
Oreo Candy – The Jenny Revolution
Oreo Stuffed Candy Monster Cookies – Modern Honey
Monster Oreo Cookies – Hungry Happenings
Candy Oreo Monster Skillet Cookie Pizza


Xiaolu @ 6 Bittersweets -
These look gorgeous!
Kelly -
Thank you Xiaolu!
ZY -
These look delicious!