Preheat oven to 180C degrees. Grease a baking pan with butter or cooking spray and set aside.
In a pan, add dates, water and sugar. Bring this to a boil and cook until the dates soften.
In a large bowl, mix together the flour, oats, brown sugar, and baking soda.
Add melted butter, and stir until combined. The mixture would be little dry. Do not worry about it.
Press half of the flour mixture into the prepared baking pan. Pour the date filling over it. Then press the remaining flour mixture over the top of the filling
Bake for 20 minutes or bars start to turn golden in the oven.
Let them cool completely before cutting them into bars of your preferred shape.