Potato Knish

also called knish · knishes · square knish · potato knish · baked knish · knysh

Three ways to read this recipe

The table

Potato Knish: ingredients down the left, what to do with them across. Tap any cell to cross it off.
2 lb(900 g, peeled, in chunks)russet potatoesboil the potatoes 20 minmash coarse, season hardroll thin, fill the sheet, lay the topbrush with egg, bake 45 min, cut into squares
3 qtwater
1 Tbskosher salt
2 large(diced)yellow onionsfry the onions 20 min in schmaltz
1/4 cup(60 mL)schmaltz
2 tspkosher salt
1 tspblack pepper
2 cups(250 g)all-purpose flourmix the dough, rest 1 hr
1 tspbaking powder
1/2 tspkosher salt
1 largeegg
1/4 cup(60 mL)neutral oil
1/2 cup(120 mL)warm water
1 tspwhite vinegar
1 large(beaten with a splash of water)egg
Tap anything to cross it off.

What to lay out

Everything the recipe asks for, sitting under the step that eats it. Tick each one as you measure it.16 things to get out.

Pans and tools

1boil the potatoes 20 min

2fry the onions 20 min in schmaltz

3mix the dough, rest 1 hr

4mash coarse, season hard

goes in with what steps 1 and 2 made

6brush with egg, bake 45 min, cut into squares

goes in with what step 5 made

Cooking it

Tap a step when it is done; the next one lights up.

The clock

Start to finish
at least 1 hr 45 min2 of 6 steps give no time
Needs you
about 20 min
If you get it wrong
Forgiving — the mash has no room in it: a potato mashed smooth goes gluey, and a gluey knish is heavy all the way through
  1. mix the dough, rest 1 hr

    1 hrwalk awayfrom the start

  2. boil the potatoes 20 min

    20 minwalk awayfrom the start

  3. fry the onions 20 min in schmaltz

    20 minneeds youfrom the start

  4. mash coarse, season hard

    not timed20 min in

  5. roll thin, fill the sheet, lay the top

    not timed1 hr in

  6. brush with egg, bake 45 min, cut into squares

    45 minwalk away1 hr in

You'll need sheet pan

Goes with

See how it is written
>> title: Potato Knish
>> category: Dumplings & Rolls
>> tags: potato, onion, baked, pastry, deli
>> counters: Deli
>> aka: knish, knishes, square knish, potato knish, baked knish, knysh
>> pairs-with: schmaltz, sour-dill-pickles, chicken-broth
>> servings: 8
>> time: 2 hr 15 min
>> slack: forgiving — the mash has no room in it: a potato mashed smooth goes gluey, and a gluey knish is heavy all the way through

>> step: mix the dough, rest 1 hr
Mix @all-purpose flour{2%cups}(250 g), @baking powder{1%tsp} and @kosher salt{1/2%tsp} with @egg{1%large}, @neutral oil{1/4%cup}(60 mL), @warm water{1/2%cup}(120 mL) and @white vinegar{1%tsp} into a soft, slightly sticky dough, knead it for a minute, then oil it, cover it and ~rest{1%hr}.

>> step: boil the potatoes 20 min
Boil @russet potatoes{2%lb}(900 g, peeled, in chunks) in @water{3%qt} with @kosher salt{1%Tbs} and ~boil{20%min}, until they fall off a knife, then drain them dry in the hot pan for a minute.

>> step: fry the onions 20 min in schmaltz
Fry @yellow onions{2%large}(diced) in @schmaltz{1/4%cup}(60 mL) over medium heat and ~fry{20%min}, until deep gold.

>> step: mash coarse, season hard
Mash @&(~2)drained potatoes{} coarse with @&(~1)fried onions{} and all the fat in their pan, @kosher salt{2%tsp} and @black pepper{1%tsp}.

>> step: roll thin, fill the sheet, lay the top
Roll @&(~4)rested dough{} on a floured cloth until you can nearly see through it, line a #sheet pan{}, spread @&(~1)potato filling{} an inch thick, and fold the overhang over to seal.

>> step: brush with egg, bake 45 min, cut into squares
Brush @&(~1)filled sheet{} with @egg{1%large}(beaten with a splash of water) and ~bake{45%min} at 400°F (200°C), until the top is glossy and deep brown, then cut it into eight squares while it is still warm.