Potatoes au Gratin – forget scalloped potatoes, THIS is the creme de la creme of all potato recipes!! Also known as Dauphinoise Potatoes, this French classic is adapted from a Julia Child’s recipe. With layers upon layers of finely sliced potatoes baked in, cream, butter and cheese with a hint of fresh thyme, it’s luxurious and thoroughly indulgent.
Bonus: It’s the ultimate make ahead potato side dish! And next time, try Brie Dauphinoise…
Potatoes au Gratin
Potatoes au Gratin? Or Scalloped Potatoes?
If you’re wondering what the difference is between Scalloped Potatoes and Au Gratin Potatoes, scalloped potatoes are made with a flour-butter-milk roux, whereas Potatoes au Gratin are made with 100% indulgence: cream, butter and cheese.
So I ask you again: Potatoes au Gratin? Or Scalloped Potatoes?
There’s no contest. Cream trumps flour Every. Single. Day. 😂
Potatoes au Gratin for the win!!!
All the essential food groups present
I was going to say that it’s quite remarkable how so few ingredients can make something so luxurious. But the reality is, it’s pretty hard to go wrong when potatoes, cream, butter and cheese are involved.
We’re working with all the good stuff today!
Best kind of potatoes for au gratin
This is the sort of potato dish where we want the potatoes to breakdown and become lovely and soft under that golden cheesy crust, so we need to ensure we use starchy potatoes. Australia – I use Sebago (those dirt brushed potatoes). America – Russet is perfect, and for those of you in the UK, King Edward or Maris Piper are perfect. Or any other starchy potatoes – Dutch creams, King Edwards or red delight.
To be honest, as long as you do not use a waxy potato then it’s going to work great – I’ve used all sorts over the years. Waxy potatoes are the kind used for potato salads and if used in Potatoes au Gratin, the layers sort of slip apart and you’ll have paper-thin-potato UFO’s flying all over the place.
Been there, done that. Not good, my friends.
How to make potatoes au gratin
Thinly sliced potato is layered with a cream-butter-garlic mixture, sprinkled with thyme and the mandatory cheese in every layer. Bake covered for 75 minutes (yes really, it takes that long), then uncovered just to make the cheese on top lovely and golden.
While it might seem daunting to thinly slice 1 kg / 2 lb of potatoes, this is the sort of task where you’ll quickly get into a rhythm. By the 3rd potato, you’ll be slicing like a pro!
Though having said that, a mandolin will make short work of it….
I am yet to meet a form of potato I don’t like. And of all the ways to cook potato, this is my favourite. (UPDATE: Though the newly invented Brie Dauphinoise version is also a hot contender!).
Sure, sometimes I stray and get excited by my latest obsession. I went mad for Ultra Crispy Smashed Potatoes, and crazy over Parmesan Crusted Potatoes. I thought Twice-baked Stuffed Jacket Potatoes were the ant’s pants.
But Potatoes au Gratin are a classic that I’ll love forever and ever. First made using Julie Child’s recipe which then evolved slightly over the years to what it is today. A slightly more streamlined assembly process, the addition of garlic and… I upped the cheese.
Do you think Julia would approve?? 😂 – Nagi x
Watch how to make it
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Potatoes au Gratin (Dauphinoise)
Ingredients
- 1 1/2 cups cream , full fat (Note 1)
- 2 garlic cloves , minced
- 30g / 2 tbsp unsalted butter , melted
- 1.25 kg / 2.5 lb starchy potatoes , Russet, Sebago, Maris Piper (Note 2)
- 1 tsp salt
- 1/4 tsp pepper
- 2 1/2 cups gruyere cheese (colby, cheddar, havarti or tasty), freshly grated yourself (Note 3)
- 2 tsp thyme leaves , fresh (optional – but highly recommended)
Instructions
- Cream Mixture: Place butter, cream and garlic in a jug. Mix until combined.
- Preheat oven to 180°C/350°F (both fan and standard ovens).
- Slice potatoes: Peel the potatoes and slice them 1/8"/3 mm thick. Or use a slicer!
- Layer 1: Spread 1/3 of the potatoes in a baking dish (Note 3), then pour over 1/3 of the Cream Mixture, scatter with 1/3 of the salt, pepper and thyme. Sprinkle with 3/4 cups cheese.
- Layers 2 & 3: Repeat for the 2nd and third layer, but do not finish with cheese on the top layer (will add later).
- Cover & bake: Cover with lid or foil, and bake for 1 hour 15 minutes or until the potatoes in the middle are soft (use knife to test), it might take 1 1/2 hours. (Note 5)
- Top with cheese, bake again: Remove foil, top with cheese. Bake for a further 10 to 15 minutes until golden and bubbly. Stand 5 minutes before serving.
Recipe Notes:
Nutrition Information:
Au Gratin Potatoes recipe originally published December 2014. New photos, recipe video and updated post in December 2018, then some tidying up done in December 2020. No change to recipe!
Feed your potato obsession
Life of Dozer
Kathy says
After the holidays I had a bag of potatoes and tons of misc cheeses to use up. I’m thankful for this recipe because it was east to prepare and I baked it in a larger dish to cut down the cook time. We really enjoy your recipes! Thank you and Happy New Year!
Linda Lindsay says
Delicious! Made this last night – so easy to put together. Can I freeze the leftovers? Thanks for great recipes!
Anna Migalla says
followed the recipe, except for cheese. We used Jarlsburg and an extra clove of garlic. We just love garlic! And baked in a 12 inch dutch oven skillet.
Dympna says
Potatoes au Gratin:
Made this super dish on Christmas day, so easy to follow and an absolute winner. Making again for New Years day yum
Thank you so much for sharing recipe with all your tips and tricks.
Lila says
I tried this recipe today to serve tomorrow, so followed directions about reserving 1/2 c of cream to put on after baking. Directions weren’t clear, so i withheld the final 1/2 cup (third of cream) and baked potatoes without a last layer of cream. Baked for about an hour, and after resting, I’ve discovered that the top layer of potatoes have turned gray. After putting cream and rest of cheese on, I will need to add more cheese to cover up gray color. Should directions have said, reserve 1/2 cup, then split the remaining cup into thirds to distribute? directions not clear.
Stacy says
Absolutely delicious! Everyone loved them. I used 3 cups of gruyere, because, well….gruyere! Made for Christmas dinner, and will probably repeat for New Years too!
Tom says
I made a half portion of this recipe, and split it between 4 small dishes. Absolutely indulgent and delicious. Perfect for the holidays! Thank you for the recipe.
Brandii says
Made this today for Christmas (with the added addition of some bacon and fresh parsley) and it was an absolute hit. Definitely will make this again <3
Dina says
Cant rate yet……..looking forward to trying this recipe today..
Except I just realized..I grated smoked gruyere – do you think that will be okay??
Jess says
Hi Nagi,
I absolutely LOVE your recipes! This is another slam dunk! I adjusted for two people (using two potatoes that = about 1.6 pounds and a 8×8 glass pan) then replaced the cream with evaporated goats milk because that’s what I had on hand and also used Gouda and burlap & barrel’s flowering hyssop thyme for the same reason.. also used some smoked sea salt and Himalayan salt, just delicious! Thank you ^_^
PATRICIA GAIL ANTECKI says
I was going to try baking these in my Ninja cooker? Will all the directions be the same for a Ninja cooker?
Taylor says
Love this recipe but it’s always pretty greasy in the bottom. Do I need to cook longer or add something to help with that?
Elisabeth says
Hi! How far ahead can I make this potato gratin? 1 or 2 days? Thanks
Julie Faithfull says
Hi Nagi,
Do you think this receipe will work with coconut cream. My son has dairy allergies. Love your receipes.😊
Katy says
Hi Nagi,
These were amazing! I used a larger baking dish, so as you stated, it wasn’t as deep. I wanted to double the recipe for Christmas. Do you think I could do that using just one large baking dish or would you recommend making to separate smaller dishes?
Thanks!
Stephanie says
I am also wanting to double the recipe for Christmas lunch on the 18th and was wondering should I use 2 baking dishes or one really large one?
Debbie Hulbert says
I will be making this recipe for our Christmas Eve dinner this year. I think I might blend gruyere and cheddar. Thoughts on that? It will accompany ham with Dijon balsamic glaze (also yours I believe).
Ellen says
I used Trader Joe’s Gruyere/Cheddar combo and it was delicious.
Sharon says
If I use a 13×9 dish would I bake for same time or less time?
Sharon Newman says
If I use a 9×13 casserole for the au gratin potatoes would cooking time be less?
Max says
Hi Nagi,Ripper Potato Bake recipe.Better than our fave Chook Shop bake by a mile!Or other bake recipes I’ve used.Easy as.I did add finely diced smoked bacon on each layer and with the thyme…oooohhh yeah!Thanks again o keeper of the Pan,Goddess of the Spatula,Baroness of the Bacon.🤦♂️👍😀
Savanah says
This has become a favorite with our family for the holidays. I slice the potatoes and then blanch them before. This way they are all cooked through. (First year i made them the center was still raw) I also melt a little bit of butter first and mix in the garlic and thyme to help release more flavor before I mix with the cream.