(Makes about 2 dozen)
Dough (with potato mixture)
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1 cup mashed potatoes (from about 1 large russet potato — boiled or steamed, not baked dry)
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1 cup warm potato water (the water you boiled them in, or plain warm water if you used flakes)
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½ cup sugar
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½ cup melted butter (for softer donuts, substitute half the butter for shortening)
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2 eggs, beaten
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1 tsp salt
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2¼ tsp active dry yeast (1 packet)
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½ cup warm water (105–110°F)
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6–7 cups all-purpose flour
Glaze
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3 cups powdered sugar
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½ tsp vanilla
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4–6 Tbsp milk (adjust for thickness)
Instructions
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Make mashed potatoes
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Peel and boil 1 large russet potato until tender. Mash until very smooth (no lumps).
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Save 1 cup of the starchy potato water before draining.
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Activate yeast
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In a small bowl, mix yeast with ½ cup warm water and 1 Tbsp sugar. Let sit 5–10 minutes until foamy.
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Mix wet ingredients
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In a large bowl (or mixer), combine mashed potatoes, potato water, sugar, butter, eggs, and salt.
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Add yeast mixture and stir to combine.
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Add flour gradually
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Add 3 cups flour and mix. Continue adding flour ½ cup at a time until dough is soft, slightly sticky but kneadable (about 6–7 cups total).
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Knead 8–10 minutes until smooth and elastic.
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First rise
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Place in a greased bowl, cover with a towel, and let rise until doubled — about 1 hour.
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Shape spudnuts
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Roll dough ½ inch thick on a floured surface. Cut with a doughnut cutter (or use a cup and a bottle cap).
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Place on parchment or lightly floured surface. Cover and let rise 30–45 minutes until puffy.
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Fry
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Heat oil to 365°F (185°C).
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Fry 2–3 at a time until golden brown on both sides (about 1 minute per side).
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Drain on paper towels.
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Glaze (optional but heavenly)
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Dip warm spudnuts in glaze and set on a rack to dry.
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Tips:
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Don’t use baked potatoes unless you mash them with a little milk or water — baked ones can be too dry and dense.
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Potato flakes work in a pinch: use 1 cup prepared instant mashed potatoes.
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For extra softness, substitute ¼ cup of the butter with shortening.
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You can also coat in cinnamon sugar instead of glaze.
