Step 1

Combine the yeast, sugar, and 1 cup of the warm non-dairy milk in a small bowl and let stand until foamy, about 8 minutes.

Step 2

Whisk together the flour and salt in a bowl. Add the yeast mixture, egg replacer, and margarine, and beat until the dough is soft but not sticky, about 3 minutes.

Step 3

On a lightly floured surface, knead the dough until smooth and elastic, 3 to 4 minutes. Transfer the dough to a medium bowl coated with nonstick cooking spray, and cover loosely with plastic wrap. Let rise in a warm, draft-free place until doubled in size, about 1 1/2 hours.

Step 4

Punch down the dough. On a lightly floured surface, knead the dough a few times, and roll out to 1/4-inch thick. Cover with a clean dish towel, and let rest for 5 minutes.

Step 5

Using a 2-inch-diameter cookie cutter, cut out rounds and transfer to a lightly floured baking sheet. Reroll the scraps, and cut out the remaining dough. Cover the rounds with a clean dish towel and let rise in a warm, draft-free place for 20 minutes.

Step 6

Meanwhile, heat the oil in a large, heavy-bottomed pot until it reaches 375°F. Place a wire rack on top of parchment paper or on a baking sheet, and line with paper towels or brown paper bags.

Step 7

Working in batches of four or five, add the doughnuts to the hot oil and fry, turning once, until golden and puffed, about 1 minute per side. Using a slotted spoon, place the doughnuts on the paper towels to cool. Sprinkle with confectioners’ sugar.

Step 8

Spoon jam into a pastry bag fitted with a plain 3/8-inch tip. Pierce a hole in the side of a doughnut with the tip, and squeeze in jam to fill (the filled doughnut will feel heavy).