Preheat oven to 375°F and line your baking dish with parchment (optional, but makes removal a whole lot easier!)
In a large mixing bowl, stir together all ingredients until well mixed.
Divide mixture between two 8-inch square pans (or a 9×13) and firmly press into pan.
Bake for 10 minutes or until golden and bubbly. Bars will be soft straight from the oven but will crisp up as they cool.
Allow to cool for 5 minutes and then turn onto a cutting board. Run a knife along the edges if necessary to release. Then cut into bars while still warm.
Cool completely and then store in an airtight container at room temperature until ready to eat.