Ingredients
- 1 small potato, peeled and cubed
- 1 (16 ounce) package confectioners’ sugar
- 1 tablespoon milk, or more as needed
- Green food coloring (optional)
- 1/3 cup peanut butter
Directions
Place potato cubes in a small sauce pan and cover with salted water. Bring to a boil, then reduce heat to medium-low and simmer until tender, about 15 minutes. Drain and cool.
Mash potato in a large bowl until smooth.
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Stir 1 cup confectioners' sugar into mashed potato; mix well. Gradually stir remaining confectioners' sugar and milk to form a firm dough. Incorporate green food coloring at this point if using.
Sprinkle work surface with confectioners' sugar, and roll dough into an 8×12-inch rectangle about 1/2 inch thick.
Spread peanut butter evenly onto the dough.
Tightly roll dough into a log, jelly roll-style, beginning at the wide end.
Wrap log in plastic wrap and chill in refrigerator until the candy sets up, about 1 hour. Cut into 1/4-inch slices.