WARM ONIION POTATO GRATIN

WARM ONIION POTATO GRATIN image

Yield 4 servings

Number Of Ingredients 5

1 1/2 lbs Yukon Gold Potatoes, peeled, cut into 1/4" slices
3/4 lb onions thinly sliced
1 cp (packed) grated Gruyere cheese (about 4 oz)
8 tbls (packed) freshly grated Parmesan cheese (about 2 oz)
2/3 cp whipping cream

Steps:

Combine potatoes and sliced onions in heavy large saucepan. Add enough water to cover. Bring water to boil. Reduce heat and simmer until potatoes are almost tneder, about 3 minuites. Drain potato-onion mixture well. Arrange half of of potato-onion mixture in 11 x 7" glass bakeing dish. Sprinkle with salt and pepper. Sprinkle mixture with 1/3 cup Gruyere cheese than 2 tbls Parmesan cheese. Arrange remaining potato-onion mixture atop cheeses. Pour cream over. Sprinkle with salt and pepper, then remaining 2/3 cp Gruyere cheese and 6 tbls Parmesan cheese. Can be prepared 8 hours ahead. Cover and refrigerate Preheat oven to 400. Bake gratin uncovered until cream thickens, about 25 minutes. Remove from oven. Preheat broiler. Broil gratin until top is golden 2 minutes.