Apple Crisp Bars Recipe

Sift together flour, salt and baking soda. Combine with brown sugar. Cut 1 1/2 C. margarine into first mixture and add oats. Spread 1/2 mixture in greased sheet cake pan. Pour apple pie filling over crumb mixture, dot with 1 stick margarine and sprinkle 1/2 C. sugar over apples. Cover with remaining crumb mixture. Bake at 350° for 45 minutes.