Crunchy Brownie Bars

Directions

1. 1
   Combine flour, soda and salt; stir in oats and brown sugar. Add margarine and pat mixture in bottom of ungreased 11 x 7-inch baking pan.
2. 2
   Bake at 350° for 10 minutes.
3. 3
   While bottom is baking, prepare brownie mix.
4. 4
   Spread batter over crunchy layer.
5. 5
   Return to oven and bake until brownies are done, approximately 40 minutes. Frost when brownies are cool.