A nostalgic no-bake treat, also known as confetti squares or butterscotch marshmallow bars, this is a peanut butter and butterscotch fudge-like square loaded with mini marshmallows.
Line a freezer-safe 9x13 baking dish with parchment paper.
Spread mini marshmallows evenly in pan and place in freezer.
Combine the butterscotch chips, butter, and peanut butter in a saucepan. Heat over medium-low heat until melted and smooth.
Remove from heat and let sit for one minute.
Remove the marshmallows from the freezer and pour the peanut butter mixture over the marshmallows.
Gently stir until the marshmallows are coated and then refrigerate for at least 1-2 hours.
Cut into squares and enjoy!
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Notes
The step of freezing the marshmallows helps keep them from melting when the warm peanut butter mixture is added. If you don't have a freezer-safe pan or you skip the freezing step, the melted mixture will need to sit for more than one minute before adding to the marshmallows so that the marshmallows don't melt. Be careful if using a glass or pyrex dish as you will be pouring a warm mixture into the frozen marshmallows. The temperature difference could cause it to crack.When adding the peanut butter mixture to the marshmallows, you'll want to stir to make sure the marshmallows are distributed throughout the bars.