Stuffed Green Peppers

3 big green peppers
1 1/2 lbs ground beef
1/3 cup raisins
1 cup chopped onions
2 tablespoons minced garlic
1 tablespoon salt
 pepper
1 egg
1/3 cup breadcrumbs
2 tablespoons flour
1 tablespoon cornstarch
dash of worcestershire sauce
1 big can tomato sauce
olive oil