Combine all 5 ingredients together in mixing bowl, until well blended.
Grease a 9x13 inch pan. You can use a slightly smaller pan if you'd prefer your bars to be thicker. I put mine in an 8x11.
Sprinkle the top of the bars with sugar. This step is important, because it gives the top a slightly crisp texture, reminiscent of actual Dutch Letter Bars.
Bake for 30-35 minutes, or until the top is just lightly golden brown.