The Supreme Shepherd s Pie

1 pound leftover roast beef, cubed

2 onions, thinly sliced

½ cup homemade beef gravy

4 cups mashed cooked potatoes

Preheat oven to 350 degrees F (175 degrees C).

Place roast beef in an even layer in bottom of a 2 quart casserole dish. Cover with sliced onions, then gravy. Spread mashed potatoes over top.

Bake in preheated oven for 1 hour, until potatoes are browned.