Confetti squares are a fun and nostalgic treat that’s ridiculously easy to make and absolutely irresistible. Also known as peanut butter marshmallow squares or butterscotch marshmallow squares, these retro desserts are a fluffy, chewy, and gooey bite of peanut butter sweetness.
With their vibrant colors and melt-in-your-mouth texture, confetti squares are the ultimate no-bake indulgence. They’re unapologetically sweet, delightfully simple, and perfect for satisfying your sweet tooth—whether you’re making them for a party, a potluck, or just a nostalgic trip down memory lane!
Peanut Butter Marshmallow Squares

Confetti squares are a fun and nostalgic treat that’s ridiculously easy to make and absolutely irresistible. Also known as peanut butter marshmallow squares or butterscotch marshmallow squares, these retro desserts are a fluffy, chewy, and gooey bite of peanut butter sweetness.
Ingredients
- 1/4 cup unsalted butter
- 1 cup peanut butter
- 1 bag butterscotch chips,,300g
- 4-5 cup rainbow marshmallows
Instructions
Step-By-Step Instructions
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Notes
- Store bars in an airtight container in the fridge for up to 5 days. Bars can be frozen for up to 2 months, then thaw overnight in the fridge.