Grandma Doris always called this her 4 ingredient sweet and salty secret. I finally learned her trick and the pan disappears from the picnic table in

it on the stovetop for a few minutes to thicken slightly before using; a thicker sauce sets better and won’t run when you cut the bars. To make neat slices, use a sharp knife warmed under hot water and wiped dry between cuts.

Food safety tips: Always handle the hot glass casserole dish with dry oven mitts and place it on a heatproof surface to prevent burns or thermal shock. Let the bars cool before refrigerating so you’re