Preheat oven to 400 degrees.

Mix together flour and baking powder.

Add in salt, 1/4 cup oil, 1/4 cup water, 1 egg and 1 egg white.

Mix until you have a workable dough. Set aside.

Mix together beef, chopped onions, 1 egg, sweet potato, salt, pepper and gravy.

Roll out your dough until it is thin, about a 1/8 inch.

Cut out as many circles as you can, and add a dollop of filling to each one.

Scrunch up the sides and fold together to make dumplings.

Take 1 egg, and brush on all knishes.

Bake for 15-20 minutes on a cookie sheet lined with foil until the filling is cooked and dough is golden brown.