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

not placing very hot glass directly into a cold environment, which could cause the dish to crack. Store the bars covered in the refrigerator, especially in warm weather, to keep the caramel from becoming overly soft and to maintain quality; discard if they develop any off odors, flavors, or visible mold. If using homemade caramel, follow a reliable recipe and be cautious when working with hot sugar, as it can cause severe burns—keep children and pets away from the stovetop during that step.