Spanish Rice Pronto

1 -2 teaspoon olive oil or 1 -2 teaspoon canola oil 3/4-1 lb lean ground beef or 3/4-1 lb extra lean ground beef 1/2 green pepper , diced 1 medium onion ,[...]

2 tablespoons butter or 2 tablespoons margarine 1/2 cup chopped onion 1/2 cup chopped green pepper 2 cups instant rice 1 (15 ounce) can tomato sauce 2 cups[...]