
Here’s a classic and nostalgic treat: Peanut Butter Marshmallow Squares! Sometimes called “Butterscotch Confetti,” these no-bake bars are sweet, chewy, and super simple to make.
🍫 Peanut Butter Marshmallow Squares
Prep Time: 10 minutes
Chill Time: 1–2 hours
Total Time: 1 hour 15 minutes
Servings: About 24 squares
📝 Ingredients:
- ½ cup unsalted butter
- 1 cup creamy peanut butter
- 1 (11 oz) bag butterscotch chips (about 1¾ cups)
- 1 (10 oz) bag mini marshmallows (about 5 cups)
- Optional: ½ teaspoon vanilla extract
- Optional: Pinch of salt
👩🍳 Instructions:
- Line a pan: Use an 8×8-inch or 9×9-inch square pan. Line with parchment paper or lightly grease.
- Melt base: In a large saucepan over low heat, melt the butter, peanut butter, and butterscotch chips together. Stir constantly until smooth. Remove from heat and let it cool for about 5 minutes (important so the marshmallows don’t melt).
- Add marshmallows: Gently fold in the mini marshmallows until evenly coated.
- Press & chill: Pour the mixture into the prepared pan and press down gently with a spatula. Chill in the refrigerator for at least 1 hour, or until firm.
- Slice & serve: Cut into squares and enjoy!
❄️ Storage Tips:
- Refrigerator: Store in an airtight container for up to 1 week.
- Freezer: Freeze squares between layers of parchment paper in a freezer-safe container for up to 3 months. Thaw in the fridge before serving.
🧊 Refrigerator Storage:
- Wrap tightly with plastic wrap or store in an airtight container.
- Separate layers with parchment or wax paper to prevent sticking.
- Store in the fridge for up to 1 week — this helps them stay firm.
❄️ Freezer Storage:
- These bars freeze very well!
- Place squares in a freezer-safe container, using parchment paper between layers.
- Freeze for up to 3 months.
- To serve, thaw in the fridge for a few hours or at room temperature for 15–30 minutes.
📝 Quick Tip:
If you prefer a softer texture, let the bars sit at room temperature for 5–10 minutes before eating.
Would you like a small-batch version or one without butterscotch chips?
🍫 Peanut Butter Marshmallow Squares
Servings
24
servingsPrep time
10
minutesCooking time
1
minuteIngredients
½ cup unsalted butter
1 cup creamy peanut butter
1 (11 oz) bag butterscotch chips (about 1¾ cups)
1 (10 oz) bag mini marshmallows (about 5 cups)
Optional: ½ teaspoon vanilla extract
Optional: Pinch of salt
Directions
- Line a pan: Use an 8×8-inch or 9×9-inch square pan. Line with parchment paper or lightly grease.
- Melt base: In a large saucepan over low heat, melt the butter, peanut butter, and butterscotch chips together. Stir constantly until smooth. Remove from heat and let it cool for about 5 minutes (important so the marshmallows don’t melt).
- Add marshmallows: Gently fold in the mini marshmallows until evenly coated.
- Press & chill: Pour the mixture into the prepared pan and press down gently with a spatula. Chill in the refrigerator for at least 1 hour, or until firm.
- Slice & serve: Cut into squares and enjoy!

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