*Variations- You can also use cooked and mashed butternut squash or pumpkin in place of the sweet potato as well with very similar results. Mashed bananas or applesauce works great too.
Adding crushed pecans into the crumb topping makes it amazing!
If you use a regular 8×8 pan, the cooking time may be longer than stated above. You can also leave out any sweetener if you prefer to drizzle syrup over the top for serving.