1. Preheat oven to 350ºF.
2. Grease a 9" x 13" baking dish. (or a 2qt casserole dish).
3. Peel
and boil sweet potatoes (or microwave).
4. Mash the sweet potatoes.
5. Mix the rest of the main ingredients
with the potatoes.
6. Pour into the greased dish.
7. Put this aside.
8. Combine the topping
ingredients until it forms a coarse streusel.
9. Sprinkle that over the potato mix.
10. Bake for 30 minutes.