Rice crispies cereal pie crust

1/2 cup chocolate syrup
1/3 cup semisweet chocolate chips
2 cups rice crispies (GF)

Coat bottom and sides of an 8-inch pie plate lightly with butter.
Combine syrup and chocolate chips in microwave safe bowl. Microwave on high until hot, about 45 seconds. Stir until smooth. Reserve 1/4 cup of mixture (for topping of ice cream pie, if using crust for that).
Combine remaining mixture and cereal and mix to coat. Press into prepared pie plate. Freeze until firm, about 15 minutes.
Fill with ice cream or other desired filling.