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1
Place a piece of parchment paper on a large cookie sheet. Spray a little oil on the parchment. Set aside.
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2
Prepare 2 1/2 cups mashed potatoes.
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3
DOUGH.
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4
Beat together 1 cup of the mashed potatoes, the 1 tablespoons of oil and the salt. Add the flour, and baking powder, mix well.
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5
Mix in the water and knead into a smooth dough. I used my mix master to mix this and it worked great. The dough was wonderfully soft.
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6
Let the dough rest in a bowl covered with a damp cloth for about 1/2 hour.
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7
FILLING.
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8
Saute the onions in the tablespoons of oil until transparent. Mix in the rest of the ingredients. I mixed it with the mix master just until combined.
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9
Cut the dough into 4 sections and roll each section out thin. Cut the circle into 4 more pieces and put 1-2 tablespoons of the filling in each.
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10
Gather up the edges and join in the middle and pinch together so the filling doesn't leak out.
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11
Put the knish on the parchment covered baking tray with the pinched side down.
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12
Brush the top with soy creamer if desired.
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13
Set the oven to 350'F and bake for 25 minutes until golden brown. Serve with horseradish or mustard.
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14
Bon Appetit.
