Classic Potato Knishes
Traditional pareve potato knishes with a simple oil-and-water dough and a mashed potato-onion filling. The family card preserves the dough and filling but not the baking instructions, so the finalized recipe adds a dough rest, beginner-friendly shaping, and a hot bake for a thin, golden crust.
Ingredients
Equipment
Method
- In a large bowl, mix the flour and salt. Add the oil and lukewarm water and stir until a soft dough forms. Knead briefly, 1-2 minutes, just until smooth. Cover and rest at room temperature for 45-60 minutes.
- Place the potatoes in a pot of cold salted water. Bring to a boil and cook 15-20 minutes, until very tender. Drain very well and mash.
- Heat 2 tablespoons oil in a skillet over medium-low heat. Add the onions and cook 12-15 minutes, until soft and golden.
- Stir the onions into the potatoes. Add the 2 eggs, salt, and pepper if using. Taste carefully once the filling is cool enough; potatoes need enough seasoning. Let the filling cool until warm, not steaming.
- Preheat the oven to 425 F / 220 C. Line two sheet pans with parchment.
- Divide the rested dough into 2 pieces. On a lightly floured surface, roll one piece very thin, about 1/8 inch or thinner. Cut 5-inch rounds, rerolling scraps once.
- Place about 1/3 cup filling in the center of each round. Bring the dough edges up over the filling and pinch together, leaving a small opening in the center if desired. Place seam-side up or seam-side down according to the shape you prefer.
- Arrange the knishes on the prepared pans. Brush lightly with egg wash.
- Bake 25-30 minutes, rotating the pans halfway through, until the dough is deeply golden and crisp at the edges. Cool 10 minutes before serving.
Notes
Recipe #134
Category: Kugels, Sides & Knishes
Yield: About 12 knishes
Method: Rest dough, fill, bake
Prep: About 50 min + rest
Bake: 425 F / 220 C for 25-30 min
Difficulty: Intermediate
Recipe Details
Kosher: Pareve. Texture: Thin, tender-crisp dough around soft potato and sweet sauteed onion. Best feature: The dough freezes well and can also be used for other savory rolls, just as the family note suggests.
Missing Bake Instructions Reconstructed
The family card gives the full oil-and-water dough and potato-onion filling but no oven temperature or time. Traditional knish recipes bake thin dough at high heat, commonly in the 375-450 F range. This beginner version uses 425 F / 220 C for about 25-30 minutes, with deep golden color as the final doneness cue.
What a Beginner Should Look For
Dough: Soft after resting and easy to roll very thin without tearing. Filling: Thick mashed potatoes with visible golden onion and enough seasoning. Finished knish: Golden crust with no pale, raw-looking dough around the folds.
Roll the Dough Thin
The classic knish texture depends on a thin wrapper around a generous amount of filling. If the dough is too thick, the outside can brown before the inside layers are fully baked.
Beginner Tips
- Rest the dough before rolling so it does not spring back.
- Cool the filling before shaping so it does not soften the dough.
- Season the potatoes confidently; bland filling stays bland after baking.
- Use only a light dusting of flour while rolling.
- Freeze extra raw dough tightly wrapped, as the family note recommends.
- Use the extra dough for deli roll, as the family card notes.
- Add caramelized onions more generously for a sweeter filling.
- Shape as a long roll and cut into pieces for a more old-fashioned bakery style.
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