1/2 c. butter, softened
1 1/4 c. firmly packed brown sugar
1 1/3 c. quick or old-fashioned oats, uncooked
1 1/3 c. all-purpose flour
1/2 c. semi-sweet chocolate, butterscotch or peanut flavored pieces
1/2 c. chopped nuts
2 tsp. vanilla
3/4 tsp. salt
3/4 tsp. baking soda

Beat together butter and sugar until well blended. Add remaining ingredients and mix well. Spread into greased 13x9-inch pan. Bake at 350 degrees about 25 minutes, or until golden brown. Cool and cut into bars.