01 -
Line a large baking sheet or 9x13 pan with parchment paper and set aside. If using foil instead, grease it well with butter to prevent sticking.
02 -
Melt the butter in a large pot over medium heat. Add 8 cups of miniature marshmallows and stir continuously until completely melted.
03 -
Remove pot from heat. Add crisp rice cereal and stir until thoroughly combined. Fold in the additional 2 cups of unmelted marshmallows and 1½ cups of shredded coconut until evenly distributed.
04 -
Transfer the sticky cereal mixture onto the lined pan. Using a lightly buttered spatula or spoon, gently press the mixture across the pan with light pressure to maintain the soft texture. Sprinkle the remaining ¼ cup coconut on top.
05 -
Let cool for a few minutes before slicing into squares. Store in an airtight container for up to several days.