Whipped Rhubarb Cloud Cheesecake Squares

Ingredients:

For the crust: 1 1/2 cups graham cracker crumbs, 1/4 cup sugar, 1/2 cup unsalted butter, melted. For the rhubarb topping: 2 cups chopped rhubarb, 3/4 cup granulated sugar, 1 tablespoon cornstarch. For the cheesecake filling: 1 (8 oz) package cream cheese, softened, 1 cup powdered sugar, 1 teaspoon vanilla extract, 1 1/2 cups heavy cream, whipped.