This crisp is a delicious and easy dessert that is perfect for any occasion. The filling is made with fresh strawberries, rhubarb, sugar, and cornstarch, and is topped with a buttery oat and brown sugar topping. To make this crisp, start by making the filling and pouring it into a baking dish. Then, make the topping and sprinkle it over the filling. Bake until the topping is golden brown and the filling is bubbly. Serve warm with a scoop of vanilla ice cream.