My favorite holiday treat.
Unlike a standard single-dough pan of brownies that bakes uniformly from edges to center, these layered bars rely on distinct strata of fat, sugar, and dairy that cook at wildly different rates. Many bakers treat this confection as a simple dump-and-bake project, only to pull a pan from the oven where the bottom crust is charred while the shredded coconut and butterscotch on top remain dangerously under-toasted. Mastering this recipe demands attention to thermal distribution and precise physical sequencing.
Visual cues dictate doneness here since no thermometer can pierce this heterogeneous mass of nuts and melted chips. Letting the bars rest overnight in an airtight container at room temperature actually improves sliceability as the condensed milk fully sets the structure.