Preheat oven to 400 degrees F. Wash and pierce sweet potatoes with a knife; place on baking tray and bake for 1 hour. Lightly grease a casserole dish and set aside.
Make the topping: combine coconut oil, rice flour, coconut sugar and ground pecans in a medium bowl and set aside.
Make the soufflé: remove sweet potatoes from oven. When cool enough to handle, remove skin and mash with a potato masher.
Stir in coconut milk, maple syrup, sugar, vanilla, ginger, salt, coriander, and cardamom until fully combined.
Spoon soufflé into a casserole dish and sprinkle with topping. Bake for 30 minutes or until golden brown.
Allow to cool for 10 minutes, garnish with chopped pecans and serve.
Cook's Notes
The coconut palm sugar can be substituted with brown sugar.
* Make your own brown rice flour by adding brown rice to a food processor and blending until it turns to powder, or you can use a grain mill.