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Addictive peanut butter Cheerio bars

Addictive peanut butter Cheerio bars

Need something to take to a party? Or just need treats stashed in the freezer for an emergency? These 5-ingredient peanut butter Cheerio bars take mere minutes to make. And no, they aren’t just for kids!
5 from 8 votes
Prep Time 5 mins
Cook Time 10 mins
Cuisine American
Servings (click to change) 20
Author Helen


  • 2 ounces butter (about 3 tablespoons)
  • ½ cup peanut butter
  • 10 ounces marshmallows
  • 6 cups Cheerios (use 5 cups if using UK cups)
  • 7 ounces chocolate milk or dark


  • Line a 9 x 13 inch pan with baking paper.
  • Melt the butter, peanut butter and marshmallows together slowly on a low heat.
  • Combine with a wooden spoon, then stir in the Cheerios.
  • Press the mixture into the pan with damp hands to stop the mixture sticking.
  • Melt the chocolate in the microwave for 90 seconds, then pour over the Cheerio mixture, spreading right to the edges.
  • Let the Cheerio bars set in a cool place for a while (the fridge is fine), then cut into bars. Store in an airtight container for up to 2 days, or freeze in Ziploc bags.


*Note about measuring the Cheerios: If you're using UK cups (slightly larger than US cups), use just 5 cups of Cheerios (about 240 - 250 grams). Don't worry about being super precise - it won't ruin the recipe!
Remember to melt your butter, peanut butter and marshmallows ON A LOW HEAT. You don’t want it to boil up into a super chewy caramel!
If you like, you can replace ½ cup of the Cheerios with ½ cup peanuts (I use unsalted but salted may work well too!).
These peanut butter Cheerio treats stay crispy for a day or two in an airtight container, but not too much longer. If you want to keep them longer, store in the freezer in Ziploc bags.


Calories: 177kcalCarbohydrates: 23gProtein: 3gFat: 9gSaturated Fat: 4gCholesterol: 6mgSodium: 99mgPotassium: 111mgFiber: 1gSugar: 14gVitamin A: 280IUVitamin C: 1.3mgCalcium: 31mgIron: 2.5mg
Tried this recipe?Let me know if you liked it!