Blueberry Oat Bars

1 ½ c. uncooked rolled oats

¾ c. brown sugar

½ c. butter or margarine

¼ c. oil

1 ½ c. flour

½ t. soda

½ c. chopped nuts (optional; we use walnuts)

5 c. fresh or frozen blueberries

Mix the first 7 ingredients together until crumbly. Press ¾ of that mixture into a lightly greased 9x13 pan. Pour blueberries over the crust and sprinkle the remaining crust mixture over the top. Bake at 350°F for 25-30 minutes.