Heat oven to 350°F. In large bowl, blend brown sugar and butter. Add oats, 1 1/2 cups flour and the baking soda; mix until crumbs form. Press half of crumb mixture in bottom of ungreased 15x10x1-inch pan; reserve remaining mixture for topping. Bake 10 minutes.
Meanwhile, in large bowl, mix all filling ingredients except cherries. Stir in cherries.
Pour filling over partially baked crust. Crumble and sprinkle remaining half of crumb mixture over filling.
Bake 25 to 35 minutes longer or until center is set. Cool completely, about 1 1/2 hours. For bars, cut into 10 rows by 6 rows. Store in refrigerator.