This is outstanding ~ Katerina posted this awhile back on the other board.

Scalloped Potato Duo with Ham
by Katerina on CK

1 med onion, coarsly chopped
1 TBS vegetable oil
3 cloves garlic
2 sweet baking potatoes, peeled and cut into 1/4" slices
2 baking potatoes, peeled and cut into 1/4" slices
1/2 cup flour
1 tsp salt
1/4 tsp pepper
2 cups chopped ham
2 cups shredded gruyere cheese, divided
1-3/4 cups whipping cream
2 TBS butter, cut into pieces

Saute onion in oil over med-high heat for 5 minutes. Add garlic and cook 30 seconds. Remove form heat and set aside. Place potatoes in a large bowl.

Combine flour, salt and pepper and sprinkle over potatoes, tossing to coat. Arrange half of potato mixture in a greased 9x13 baking dish. Top with onion, ham and 1 cup of the cheese. Top with remaining potato mixture. Pour cream over potatoes. Dot with butter and cover with foil.

Bake 400 degrees for 50 minutes. Uncover and top with remaining 1 cup of cheese and bake another 20 minutes or until potatoes are tender and cheese browned. Let stand 10 minutes before serving.