In a bowl, combine the flour, sugar, baking powder, and yeast. Mix, then add the salt, egg, and warm water. Knead the dough for 5 minutes.

Roll the dough out on a floured surface into a square. Grate the cold margarine evenly over the dough. Gently roll up the dough. Roll it out again into a square. Fold the dough into thirds, then roll it out into a square again. Fold into thirds once more. Place in the refrigerator for 1 hour.