Cook pasta according to instructions. Drain and set aside.
While pasta is cooking, steam cauliflower until tender and transfer to a food processor with tapioca starch and Quaker Unsweetened Oat Beverage. Puree until smooth.
Pour cauliflower puree into a saucepan and place over medium low heat. Whisk in tapioca starch and cheese until melted. Stir in pasta and serve immediately.