Place sweet potato and kale into a 2 Qt/2 Litre size casserole dish (with lid).
Next, place all of the cheesy sauce ingredients into a blender. Blend on high for a minute or two until smooth and creamy.
Pour the cheesy sauce evenly over the vegetables, lightly sprinkle with paprika or nutmeg. and cover with a lid. If you do not have a baking dish with a lid, use some aluminum foil to cover it tightly.
Bake in oven for 30 minutes. Check the sweet potato to check how well it is cooked through. Place back in the oven for 10 to 20 minutes until the sweet potatoes are cooked through to your liking.
Check out the video at the top of this recipe page for a full cooking demonstration of how to make this recipe.