Finely crush cereal, either by hand or in a food processor or blender.

Place melted butter in a large bowl. Add crumbs; stir until well coated.

Press firmly into bottom and halfway up sides of 9-inch pie plate or pan.

Top pie with crushed peppermint candy or holiday sprinkles.

Refrigerate until the crust is set (firm).

Spread softened frozen yogurt evenly over crust.

Freeze until firm. Let stand about 10 minutes before slicing.