Step 1

Lightly spray a 9x13-inch baking dish with nonstick cooking spray and set it aside. Pour the cereal into a very large bowl and set aside.

Step 2

In a medium saucepan, melt the butter over medium heat. Once melted, continue cooking at a low boil, stirring frequently, scraping the bottom of the pan. The butter will foam up, but continue to cook until the milk solids in the butter start to brown and the butter begins to smell nutty - 3 to 5 minutes. Watch carefully as the milk solids can burn easily and become bitter.

Step 3

Add the marshmallows and stir to melt - reducing the heat if necessary. You may need to add the marshmallows in increments depending on the size of your pan. Add the salt and marshmallow creme and stir to combine. If you have trouble getting the butter and marshmallow to combine, just keep stirring.

Step 4

Remove the marshmallow mixture from the heat and pour over the cereal. Use a rubber or silicone spatula to stir the mixture to get the cereal covered. Pour the mixture into the prepared dish and lightly press flat with clean spatula. If you have trouble with this step, you can spray the spatula or your hands with a little nonstick spray to make it easier. Just don't press too firmly or your treats will be dense. Allow to cool for at least 1 hour before slicing and serving. Store in a sealed container.