41 Ratings
  • 5 Rating Star 36
  • 4 Rating Star 2
  • 1 Rating Star 1
  • 2 Rating Star 1
  • 3 Rating Star 1

Potatoes and onions mixed with a creamy cheese sauce and baked with a crispy cheese topping.

prep:
25 mins
cook:
50 mins
total:
1 hr 15 mins
Servings:
10
Max Servings:
10
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Ingredients

Directions

  • Place potatoes into a large pot and cover with water; add salt and bring to a boil. Reduce heat to medium-low and simmer until just beginning to soften, 15 to 20 minutes; drain.

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  • Melt butter in a saucepan over medium heat; add flour and whisk until the mixture thickens, 1 to 2 minutes. Pour milk and heavy cream into the saucepan; cook and stir until smooth, 2 to 3 minutes. Melt Cheddar and Asiago cheese into the butter mixture; cook while stirring continually until the mixture is smooth and creamy, 1 to 2 minutes. Season the sauce with salt and pepper.

  • Preheat oven to 400 degrees F (200 degrees C). Butter a 9x13-inch casserole dish.

  • Layer about half the sliced potatoes into the bottom of the baking dish. Top the potatoes with sweet onion slices and green onions; pour about 1/3 of the cheese sauce over the onions. Arrange the remaining potato slices into the dish; pour remaining cheese sauce over the potatoes. Sprinkle Parmesan cheese and crushed crackers over the top.

  • Bake in the preheated oven until hot in the center and beginning to brown at the edge, about 30 minutes. Sprinkle parsley over the top of the dish to serve.

Nutrition Facts

507.3 calories; 17.12 g protein; 41.54 g carbohydrates; 4.65 g dietary-fiber; 4.25 g sugars; 31.05 g fat; 19.09 g saturated-fat; 96.24 mg cholesterol; 1152.56 IU vitamin-a-iu; 5.73 mg niacin-equivalents; 0.6 mg vitamin-b6; 39.44 mg vitamin-c; 54.81 mcg folate; 403.3 mg calcium; 2.16 mg iron; 60.59 mg magnesium; 919.56 mg potassium; 455.76 mg sodium; 0.24 mg thiamin; 279.43 calories-from-fat; 32 percent-of-calories-from-carbs; 54 percent-of-calories-from-fat; 13 percent-of-calories-from-protein; 33 percent-of-calories-from-sat-fat


Reviews (35)

Read All Reviews

Most helpful positive review

lovestohost
10/20/2013
DELICIOUS! I followed the recipe to a "T" other than 1/2ing it and making it in an 8" square pan (I also forgot to add the parsley and used 2% milk...ok but I was CLOSE to recipe;) ). This is rich and delightful. While I won't make it often because it's so calorie laden it was delicious. I wasn't sure about the onions but they really made it (be sure to use sweet onions). I think this sauce would also make an excellent white sauce for mac and cheese! THANKS for the recipe!
(13)

Most helpful critical review

Anonymous
10/17/2017
Awful awful awful. Absolutely no flavor. I followed directions to the letter and was so disappointed. What a waste of expensive ingredients.
41 Ratings
  • 5 Rating Star 36
  • 4 Rating Star 2
  • 1 Rating Star 1
  • 2 Rating Star 1
  • 3 Rating Star 1
lovestohost
10/20/2013
DELICIOUS! I followed the recipe to a "T" other than 1/2ing it and making it in an 8" square pan (I also forgot to add the parsley and used 2% milk...ok but I was CLOSE to recipe;) ). This is rich and delightful. While I won't make it often because it's so calorie laden it was delicious. I wasn't sure about the onions but they really made it (be sure to use sweet onions). I think this sauce would also make an excellent white sauce for mac and cheese! THANKS for the recipe!
(13)
degratay
02/17/2014
I took this recipe to a potluck and everyone kept raving about how amazing it was. My friend who is a food critic and restaurant owner went on and on about delicious it was. I did add/change a few things. I added some bacon under the onions as well as on top on the advice of another reviewer. I also added some more cheddar and asiago cheese on top under the crackers and shaved Parmesan cheese. Also the group I was taking the dish to are all big fans of garlic so I minced up a garlic clove and sautéed for a minute in the butter before I added the flour. All the flavors blended perfectly! This will be my go to potluck dish from now on!
(12)
cookinkat
12/15/2016
EXCELLENT!!! I made two batches; one for our Thanksgiving dinner and one for our Church bakesale! They were a definite hit which I will be making again. The only difference I made with the second batch was to simply put the potatoes and sauce in a bowl together to get all the potatoes covered and then put everything into the baking pan. I did think there was more sauce than potatoes but nobody complained!!!
(2)
Anonymous
04/06/2015
OMG! This is now my go to recipe for au-gratin potatoes. Made this with Easter dinner and everyone's raving about how good they were. My brother even asked for the recipe and he's a wonderful chef. I highly recommend this recipe and would have given it ten stars if I could.
(2)
Anonymous
12/13/2013
This was a big hit at my office Christmas party. I just added fried and chopped maple bacon under the onion layer. Delicious! Thank you! I baked the night before and then cut up in squares and put in crock pot to cook on low till lunch at work. Perfect. Maezing
(2)
michelle
04/03/2016
Theses were really good potatoes. I really enjoyed the blend of cheeses. Cooking the potatoes before was a bit of a pain. Wondering if I can skip this step and just cook them longer. (Or maybe microwave them to soften them a little).
(2)
Becky g
08/23/2014
What a great recipe Great taste and enjoyed by. everyone:). We added a layer of shredded cheese in the middle layer along with diced ham - EXCELLENT!
(1)
Eyiloasan
03/05/2016
Looking for the best recipe was hard so many to choose from but I am very pleased with this one. I made my first dish Christmas 2015 and it was a big hit with my entire family. It will now be a big part of our traditional Christmas dinner. But the second time I did it was even better! (What confidence can do) I sautéed the sliced onions added more cream and bacon topping.This recipe will sure be handed down to my children and families.
(1)
I_like_Puppies
03/20/2016
YUMMYx1000!! I added a few extra Ritz crackers for the topping. More crunch is always a good thing. Don't over crush the crackers.
(1)