Grease a large mixing bowl, an 8-inch or 9-inch square pan, and a large silicone spatula with butter or baking spray.
Pour the Life cereal into the mixing bowl.
Set aside.
Begin melting the butter in a medium-large saucepan set over low heat.
Toss in the marshmallows and stir occasionally until about 75% of the marshmallows have melted.
Remove the pan from the heat and continuously stir, smashing the marshmallows, allowing them to melt until smooth.
Pour the melted marshmallows over top of the cereal.
Toss to coat evenly.
Gently press into the prepared pan.
Let cool for about an hour before cutting into 16 squares.
Notes
Store in an airtight container at room temperature for up to 5 days.
Microwave Directions:
Heat the butter and marshmallows on high power, in a large mixing bowl, for 1 minute.
Remove and stir vigorously until melted, smashing the marshmallows to help them melt. If needed, heat for additional 15-second increments, stirring vigorously after each, until melted and smooth.
Pour over cereal, mix to combine, spread into pan, and allow to cool before cutting.
Keyword cereal bars, cereal treats, Life Cereal, Life Cereal Bars, Life Cereal Treats, marshmallows, no-bake desserts, rice krispie treats