Step 1

Preheat the oven to 375F.

Step 2

Add the rhubarb, sweetener and water to a saucepan and simmer until rhubarb is cooked.

Step 3

Meanwhile, make the crumble topping by rubbing together the remaining ingredients until they are the size of large breadcrumbs.

Step 4

Test the rhubarb for sweetness and adjust if necessary, then spread it over the base of a small baking dish.

Step 5

Sprinkle the topping over the rhubarb and bake for 15-20 minutes or until golden brown on top and the rhubarb is bubbling through the topping.