Preheat oven to 325°.
Line a baking dish with parchment or foil and spray lightly with oil.
Combine all of the dry ingredients in a large bowl. Dump the condensed milk on top and mix well. Pour it all into the baking dish.
Spray your spatula with a little oil (if needed) and press the bars down flat into the pan.
Bake for 30 minutes. Let cool off a bit before slicing.