Fall Pear and Potato Gratin

This is a nice savory side with a hint of sweetness from the pears...great for a fall evening!

1 large onion, very thinly sliced
2 Tbl butter
4 medium Yukon Gold potatoes, very thinly sliced and simmered in water for 5 minutes, drained and patted dry
2 Bartlett pears, peeled, cored and thinly sliced
1 cup half and half or light cream
1/2 tsp salt
1/4 tsp white pepper
5 or 6 gratings nutmeg
1  1/2 cups finely grated Swiss cheese (I used Gruyere) divided

In a large saute pan, saute the sliced onion in the 2 Tbl butter until lightly caramelized ( about 10 minutes over medium heat ). Set aside
In a small sauce pan, heat the half and half to simmering and reduce by about 1/3.  Add the salt, white pepper and nutmeg.  Off the heat stir in 1/2 cup of the cheese.
In a well buttered baking dish (I used a 9 x 11 x 2 inch oval), layer 1/3 of the potatoes, slightly overlapping.  Layer 1/2 of the pears over the potatoes.
Sprinkle the caramelized onions over the pear layer and then layer the second third of the potatoes followed by the rest of the pears.  Layer the remaining potatoes over the top.
Pour the cream and cheese mixture over the casserole followed by the remaining cup of cheese.
Bake, covered, at 350F for 1  1/2 hours.  Uncover and continue to bake 15 to 20 minutes more.

Makes 4 to 6 servings