Use room temperature eggs to facilitate a stable emulsion, which prevents the Triple Stack Brownies recipe from turning out greasy after the bake. Avoid over-mixing the batter, as this develops gluten and ruins the tender texture required for a high-quality Triple Stack Brownies recipe. Line your baking pan with parchment paper that hangs over the edges to ensure easy removal when the Triple Stack Brownies recipe is fully cooled. Chill the final assembled brownies for at least one hour before slicing so the distinct layers remain sharp and defined. Use a hot, clean knife dipped in warm water to slice through the dense layers of the Triple Stack Brownies recipe for perfect edges.