Butterscotch Marshmallow Bars Recipe
Introduction
These Butterscotch Marshmallow Bars are a deliciously sweet treat combining the rich flavors of butterscotch, creamy peanut butter, and fluffy marshmallows. Perfect for a quick no-bake dessert, they’re easy to prepare and sure to satisfy your sweet tooth.

Ingredients
- ½ cup (1 stick / 113 g) unsalted butter
- 2 cups (340 g) butterscotch chips
- ¾ cup (190 g) creamy peanut butter
- 4 cups (200 g) miniature marshmallows
Instructions
- Step 1: Line an 8×8-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal later. Set aside.
- Step 2: In a large microwave-safe bowl, combine the butter, butterscotch chips, and peanut butter.
- Step 3: Microwave the mixture in 30-second intervals, stirring after each, until smooth and fully melted, about 1 to 1½ minutes total.
- Step 4: Let the mixture sit at room temperature for 10 to 15 minutes to prevent the marshmallows from melting when added.
- Step 5: Gently fold in the miniature marshmallows until they are fully coated with the butterscotch-peanut butter mixture.
- Step 6: Transfer the mixture to the prepared pan and press into an even layer with a spatula.
- Step 7: Refrigerate for at least 2 hours, or until the bars are firm and set.
- Step 8: Using the parchment paper overhang, lift the bars out of the pan and cut into squares.
Tips & Variations
- For extra crunch, add chopped peanuts or pretzels to the marshmallow mixture before chilling.
- Replace peanut butter with almond or sunflower seed butter for a different nutty flavor.
- Use regular-sized marshmallows broken into smaller pieces if miniatures are unavailable.
Storage
Store the bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week. If refrigerated, allow them to come to room temperature for a few minutes before serving for the best texture.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make these bars gluten-free?
Yes, all the main ingredients are naturally gluten-free. Just ensure your butterscotch chips and peanut butter do not contain any gluten-containing additives.
What should I do if my bars are too sticky?
If the bars seem sticky, refrigerate them longer to allow them to firm up. You can also lightly dust your knife with powdered sugar or grease it before cutting.
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Butterscotch Marshmallow Bars Recipe
- Total Time: 2 hours 12 minutes
- Yield: 16 bars 1x
Description
Delightful and chewy Butterscotch Marshmallow Bars featuring a rich blend of melted butter, butterscotch chips, and creamy peanut butter, combined with miniature marshmallows for a sweet, gooey texture. These easy no-bake bars are perfect for a quick dessert or snack and set firmly after chilling.
Ingredients
Ingredients
- ½ cup (1 stick / 113 g) unsalted butter
- 2 cups (340 g) butterscotch chips
- ¾ cup (190 g) creamy peanut butter
- 4 cups (200 g) miniature marshmallows
Instructions
- Prepare the baking pan: Line an 8×8-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal later.
- Melt butter, butterscotch, and peanut butter: In a large microwave-safe bowl, combine the butter, butterscotch chips, and creamy peanut butter. Microwave in 30-second intervals, stirring after each, until the mixture is smooth and fully melted, approximately 1 to 1½ minutes total.
- Cool the mixture: Let the melted mixture sit at room temperature for 10-15 minutes to prevent the marshmallows from melting when added.
- Fold in marshmallows: Gently fold the miniature marshmallows into the cooled butterscotch-peanut butter mixture until they are fully coated.
- Transfer and chill: Pour and press the mixture evenly into the lined baking pan using a spatula. Refrigerate for at least 2 hours until firm and set.
- Cut and serve: Use the parchment paper overhang to lift the bars out of the pan, then cut into squares to serve.
Notes
- Ensure the melted mixture cools enough before adding marshmallows to maintain their shape and texture.
- You can substitute peanut butter with almond butter for a different flavor profile.
- Store bars in an airtight container in the refrigerator for up to one week.
- For a firmer texture, chill overnight.
- To add crunch, sprinkle chopped nuts on top before chilling.
- Prep Time: 10 minutes
- Cook Time: 2 minutes
- Category: Dessert
- Method: No-Cook
- Cuisine: American
Keywords: butterscotch marshmallow bars, no-bake dessert, peanut butter bars, sweet treats, easy bars recipe

