- 1 1/2 cups crushed crispy rice cereal squares (such as Rice Chex®)
- 6 tablespoons butter, melted
- 1 tablespoon cocoa powder, or more to taste
- 1 teaspoon white sugar (optional)
- Stir crispy rice cereal, butter, cocoa powder, and sugar together in a bowl; press into bottom of a pie pan.