Let’s walk through the steps of making these Lucky Charms Marshmallow Treats:

First, spray an 8×8 inch baking pan well with non-stick cooking spray. This will prevent the treats from sticking to the pan.

In a large microwave-safe bowl, melt the butter. This should take about 30-60 seconds in the microwave, depending on its power.

Remove the bowl from the microwave and add the marshmallows. Stir to coat the marshmallows with the melted butter.

Return the bowl to the microwave and heat on high for 30-second intervals, stirring well after each interval, until the marshmallows have melted.

Make sure to stir well to mix the melted marshmallows with the butter. This creates a smooth, creamy mixture.

Stir in the Lucky Charms cereal until well mixed. Make sure all the cereal is coated with the marshmallow mixture.

Press the mixture firmly into the greased pan. You may want to wet or grease your hands for this step to prevent sticking.

Place the pan in the refrigerator or on the counter, covered, for at least an hour or two to allow the treats to set and cool completely.

Once the treats are set, slice them into squares and serve. Enjoy the Lucky Charms Marshmallow treat!