In a YouTube video of her favorite pumpkin desserts, Stewart makes a gluten-free crust for a spiced pumpkin pie. By crushing the rice cereal and mixing it up with a few nuts, it can then be used in place of graham crackers in a crumb crust, which can be baked as usual or used for a chilled pie. Stewart doesn't mention a particular brand of cereal in the video, but the published recipe suggests using Rice Chex.
you can render and transform dry brownie chunks or squares into chocolatey crumbs and then grind them up to make pie crust, just like you would with graham cracker or cookie crumbs. For easy incorporation into your next pie recipe, just follow the 3-ingredient formula for a perfect cookie-based pie crust, substituting stale brownie crumbs for the best cookies for flavorful crumb crusts.