For the best texture, ensure your marshmallows are fresh.
You can also prepare this recipe on the stovetop. Simply melt the butter over low heat, add the marshmallows, and stir until fully melted. Be careful not to overcook!
A pinch of salt can be added to enhance the sweetness of the marshmallows.
Avoid pressing the mixture down too firmly—just enough to form an even layer. If using your hands or a spatula, wet them lightly with water or spray with cooking spray to prevent sticking.