Brown beef and onion in oil.
Mix slightly beaten egg with cheese and add to beef along with olives and sour cream.
Simmer for 5 minutes, stirring constantly.
Salt and pepper to taste.
When mixture has cooled, fill crepes.
Roll up and place on buttered cookie sheet.
Brush tops with a little melted butter and bake in a 375° oven for 20 minutes.
These can be frozen and popped into the oven for about 25 minutes.
Can be served with a cheese or mushroom sauce.