Halloween Peanut Butter Bars

These peanut butter bars are all dressed up for Halloween! So simple with just a handful of ingredients, too.

Halloween No Bake Bars! Loaded with chocolate, peanut butter, and m&m candies! #halloween #candy #peanutbutter

Everyone knows that the best part about Halloween is Reese’s Pumpkins, right? 

I mean…they’re the best shape. I’ll fight you on that. 

Of course, my husband makes fun of me when I buy candy for myself…apparently he thinks that adults don’t eat candy bars? Pfft. He’s wrong, obviously.

But, either way, I thought I’d get my chocolate peanut butter fix via a sweet homemade treat this time around and these no bake peanut butter bars were born.

They start with peanut butter, get topped with chocolate, and are finished off with a sprinkle of crushed Halloween m&m’s. Love these bars because they’re totally easy but super festive and fun!

Feel free to skip the m&m candies and use whatever festive goodies you can find…sprinkles work well!

How to make these no-bake peanut butter bars: 

ingredients for no bake peanut butter bars

Add graham cracker crumbs, powdered sugar, peanut butter, and melted butter to a mixing bowl and stir until well combined.

You don’t even need to get your mixer dirty for this one!

Once the mixture is combined, spread it into a greased 9×9 baking dish. 

Melt some chocolate chips in the microwave and then pour the chocolate over the peanut butter layer. Smooth it all out.

Chop or crush some m&m’s. When they’re chopped up, the candy coating flakes off a bit giving you this colorful candy dust that makes the bars even prettier. 

Sprinkle the candy over the top and pop the dish in the refrigerator for at least 2 hours before cutting and serving.

These should be stored in the refrigerator. 

no bake peanut butter bars with m&m's

More Halloween Recipes To Try: 

Spider Cookies: Creepy but simple!

Halloween Crunch Bars: My favorite cereal bar recipe!

Witch’s Brew: So fun!

Halloween Candy Popcorn: This is such a fun treat.

Pumpkin Chocolate Chip Cookies: Can’t go wrong with pumpkin!

Pumpkin Crunch Cake: Our all-time favorite pumpkin recipe!

Halloween No Bake Bars! Loaded with chocolate, peanut butter, and m&m candies! #halloween #candy #peanutbutter
5 from 1 vote

Halloween Peanut Butter Bars

Prep Time
10 mins
Total Time
10 mins
Servings: 16 bars
Course: Dessert
Cuisine: American
Keyword: easy chocolate recipes, easy Halloween recipes, halloween
Calories: 252 kcal

Just a handful of ingredients to make these festive little no bake bars! If you love peanut butter, you'll love these!


  • 1 cup graham cracker crumbs
  • 1 cup powdered sugar
  • 3/4 cup creamy peanut butter
  • 1/2 cup butter melted
  • 1 cup milk chocolate chips
  • 1/3 cup chopped m&m candies


  1. Add the graham cracker crumbs, powdered sugar, peanut butter, and melted butter to a medium mixing bowl and stir well with a spoon to combine.

  2. When mixture is well combined, spread into the bottom of a greased 8x8 baking dish.

  3. Add the chocolate chips to a microwave safe bowl and microwave in 30 second bursts, stirring each time, until the chocolate has melted.

  4. Pour the chocolate over the peanut butter mixture and smooth evenly over the top.

  5. Sprinkle the m&m's over the melted chocolate.

  6. Refrigerate for 2 hours before cutting and serving.

Recipe Notes

Store in the refrigerator.

Rather than chopping, try adding the m&ms to a plastic bag and crushing them with a kitchen mallet. 

Nutrition Facts
Halloween Peanut Butter Bars
Amount Per Serving (1 bar)
Calories 252 Calories from Fat 144
% Daily Value*
Fat 16g25%
Saturated Fat 7g44%
Cholesterol 18mg6%
Sodium 152mg7%
Potassium 88mg3%
Carbohydrates 25g8%
Fiber 1g4%
Sugar 19g21%
Protein 4g8%
Vitamin A 212IU4%
Vitamin C 1mg1%
Calcium 29mg3%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on bunsinmyoven.com should only be used as a general guideline.