Grandma's Secret Trick

Chilled bar cookies allowed Grandma to "bake" in the summer without turning on her oven. But cutting the cold bars was often a challenge. Instead of bringing the whole pan of bars to room temperature before cutting, Grandma chilled the freshly made pan for 1 hour and then cut the slightly firm mixture into bars. She then finished chilling the pan. This way the bars were cut and ready to enjoy right out of the fridge.