RACHAEL RAY'S SWEET ONION POTATOES AU GRATIN

Rachael Ray's Sweet Onion Potatoes Au Gratin image

Provided by April Billedeau

Time 35m

Number Of Ingredients 9

2 Tbsp butter, cold
1 large sweet onion, such as vidalia, thinly sliced
salt and pepper
1/2 tsp ground thyme or dried if ground isn't available
1 bay leaf, fresh or dried
2 lb baby yukon gold potatoes or fingerling potatoes
1/2 to 2/3 c cream
1/2 c grated parmigiano-reggiano cheese
1/2 lb grated gruyere or other swiss cheese

Steps:

1. Heat butter in a skillet over medium heat.
2. Add onions. Season with salt, pepper, thyme and bay leaf. Cook until very soft, sweet and lightly caramelized, about 20 minutes.
3. Remove bay leaf.
4. While onions cook, place potatoes in pot and cover with water. Bring to a boil, salt the water, and cook until tender, 12-15 minutes. Drain and return potatoes to pot.
5. Mash the potatoes with cream, season with salt and pepper, and mix in the Parmigiano cheese.
6. Preheat broiler. Arrange the potatoes in individual gratin dishes or a shallow casserole dish. Top with onions and Gruyere cheese.
7. Brown gratin under hot broiler until bubbly, about two minutes.