First Layer, The Roots:
Chunks of squash, potatoes and carrots. I believe you can use any roots that you like.
For flavour and colour, next time I make this, I may add some beets.
Second Layer, The Flavours:
In a separate pan, fry some chopped fennel in vegetable oil and add to the roots.
A sprinkle of pepper or any other spices, maybe even herbs, will sure enhance the flavour.
Third Layer, Decadence:
A layer of shredded cheese. I think any kind of cheese that melts well will work.
Here I used shredded mozzarella and cheddar, but swiss may be perfect too.
Finally, the Baking:
On a medium-heated oven, for 40 minutes or so and there you have it.
Great on its own as a simple vegetarian dish or perfect for accompaniment of a meat dish.