Preheat the oven to 375 degrees F (190 degrees C). Grease an 8-inch square baking dish.
In a large bowl, combine the rhubarb, white sugar, 2 tablespoons flour, ginger, cinnamon, nutmeg, and cloves. Pour into the prepared baking dish.
In a separate bowl, combine the 1/2 cup flour, oats, brown sugar, and salt. Cut in the butter until the mixture is crumbly. Sprinkle over the rhubarb mixture.
Bake in the preheated oven for 40 to 45 minutes, or until the top is golden brown and the filling is bubbly.
Interesting Facts
Rhubarb is an ancient vegetable that has been used for centuries in both sweet and savory dishes.
Ginger has been used as a spice for centuries and is known for its warming and anti-inflammatory properties.
Crisps are a type of dessert that has a crumbly topping and a soft, cooked fruit filling.