1.

Pre heat oven to 450°F or Broiler on high.

2.

Place the sweet potatoes in the microwave and cook for 5-8 minutes until tender.

3.

While sweet potatoes are cooking, combine pecans, brown sugar, oats, cinnamon, nutmeg and cardamom in a small bowl.

4.

Put the butter into a small pan and heat until butter turns brown and smells nutty.

5.

Add to the pecan mixture to make a crumble.

6.

Carefully remove the sweet potatoes from the microwave and place into an oven proof serving dish.

7.

Arrange the potatoes so they are in a flat layer and season with salt and pepper

8.

Sprinkle with the crumble and place the dish into the oven to brown the top. About 3-5 minutes.