"My grandmother's recipe for Potato Candy (also sometimes called Peanut Butter Pinwheels).I recommend reading through the blog post before beginning, as it includes lots of tips...."
INGREDIENTS
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1/2 cup mashed potatoes* (see recipe notes for cooking instructions (105g))
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1/2 cup (1 stick) salted butter softened ((113g))
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6-7 cups powdered sugar (plus additional for dusting (800-910g))
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2 teaspoons vanilla extract
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Creamy peanut butter (for filling)