Recently I have been enjoying onions a lot and when I came across this recipe for roasted parmesan onions on Proud Italian Cook I knew that I had to try them soon. I thought that pairing them with the steak in green peppercorn sauce would be a nice fit. When you bake or roast onions they get all nice and soft and tender and they release their natural sweetness and they are just plain good! Add some melted golden brown cheese on top and a creamy wine sauce and you have one amazing side dish. The roasted onion gratin was an absolute treat! The onions were nice and tender and full of that magically sweet onion flavour. I am glad that I paired the onion gratin with such a strong main course as this side dish could easily steal the show from a lesser one. I have a feeling that these onions will be making a regular appearance on my dinner table.
Onion Gratin
A slow roasted sweet onion gratin with a cheesy cream sauce.
ingredients
- 4 large yellow onions, peeled and sliced into 1/4 inch slices
- olive oil
- salt and pepper to taste
- 1 teaspoon thyme, chopped
- 1 cup of heavy cream
- 1/4 cup of white wine
- 1/4 cup of parmigiano regginao (parmesan), grated
directions
- Spread the onion slices out in a baking dish and drizzle them with olive oil.
- Season with salt and pepper and sprinkle with the thyme.
- Bake in a preheated 375F/190C oven for 15 minutes.
- Meanwhile heat the heavy cream and wine in a sauce pan until it starts to bubble on the edges.
- Spoon the cream over the onions.
- Cover in foil and bake for another 25 minutes.
- Remove the foil and sprinkle the cheese on top.
- Increase the temperature to 450F/230C and bake until golden brown, about 5 minutes.
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I LOVE onions. I had my first stuffed onion recently and it was divine. These look just amazing and would be such a hit in this onion-loving apartment!
Those onions look quite tasty! You can’t go wrong with onions and cheese.
Must be darn sweet!
I don’t really like raw onions but I do love cooked onions. These look awesome!
Hi Kevin, Those onions look perfect along side that glorius steak! You had some great flavors going on there! So glad you liked them. I want to make them tomarrow now after seeing this!
Oooo looks so good! The best part of an onion ring is the little bit of sweet caremelized onion in the center. You’ve taken the best part and covered it in cream and cheese. Awesome!
really original! That’ a fantastic recipe!
cheers,
Rosa
Love your recipe for onion gratin, too got my favorite recipes through Cooking.com.
This sounds great. Onions are so underrated. They are delicious in their own right.
Love this dish, sounds simple bursting with amazing flavors.
That does sound quite perfect Kevin. I think this might be a good side dish for me to prepare at Christmas. I could taste the dish as you were describing it. Yum!
So elegant!
I love the look of the onion intact like that. The recipe looks delish. I have been in an oniony mood too, must be the weather.
Keep warm!
Gratins are one of my fave things to make in the winter. And I love onions!
Looks great!!!
Sounds delicious! Great side!
Mmm! that looks awfully good! It appears as if the onion is going to melt under pressure from a fork!
OOOH, i was excited for this recipe, they look fantastic 🙂
I love onions this way! I saw a recipe similiar to this, but it was baked and used cheddar cheese & Ritz crackers. So good.
I love potato gratins and never had an onion gratin before…and this I know I would love. It looks awesome!
Yum – this looks delicious, and beautiful!
I love onions and this looks delicious!
They look fabulous, Kevin! I’ll bet they’re sweet and delicious!
Wow, I’ve never really saw anything like this for onions. Neat idea!
Thanks for, once again, sharing such a great recipe.
Roasted onions are so good, and this golden top looks absolutely perfect!
I always discover new recipe from you. Not much of a big chunk of onion myself, but the recipe does so sound good.
Cheers,
Elra
wow those look amazing! i cannot wait to try them!!
those look SO good! We’ll be trying them soon!
I’ve never seen an onion gratin like this, but I sure do want to try it!
I love onions too and these look so tasty Kevin!! Gloria
Those onions look delicious! I never knew that something as simple as onions could be cooked that way, so fancy.. haha
Kevin, we love onions here at home, and I would love to make those. I have a few questions though: Did you keep the onions on the same baking sheet all th etime or is it necessary to transfer? Also, were they covered during the first time baking, or just at the end to prevent from burning?
Thanks so much
I always love combining some kind of sweet onion with steak. I like your recipe because its a unique twist I haven’t thought about before.
What a great side dish! I grew up hating onions, and have only started liking them a couple years ago. I know try to make them in as many different ways to showcase its different facets. This definitely makes the cut!
Mmm, this looks incredible. I have never had onion gratin but I know I would love it. What’s not to love about sweet onions, heavy cream and cheese?!
I know I say this all the time, but I am bookmarking this! I love roasted onions.
I love Marie at Proud Italian Cook, and you did her onions well!
They look fantastic!!
Stacey Snacks
I tried some other onion gratin recipe before and it was a dud… But this looks so delicious, and I love the presentation- so simple and elegant!
Kevin, I think this is my favorite of all your postings. I make creamed onions with sherry and herbs on holidays sometimes and as you agree, the sweet flavor can’t be beat.
Kevin, another great side dish. You always amaze me.
it looks amazing =) i love onions and cheese I HAVE to make this recipe!!
hey have you checked http://www.rouxbe.com ?
What a gorgeous-looking side dish this is. I wouldn’t have thought of an onion gratin – I HAVE to make this!
Kevin, this looks awesome…I’m going to have to try this.
Oh! I love the specks of thyme on the onions!! it looks so appetizing!
Rita: The onions were first cooked on a baking sheet and then transferred to a baking dish when the sauce is added. When they are transferred to the baking dish they are covered in foil for the first while and then the foil is removed at the end so that the cheese can brown.
i love onions! this looks great!
Thanks for posting this one, I love onions and usually do the same old vegie sauté. This is a great idea for a side of onions, plus with cheese..yum.
Thanks for posting this – it’s a great and simple way to enjoy the deliciousness that is an onion. Sounds great, and I can’t wait to try it!
I love onions, but have never thought of trying them as a side dish. That’s going to change. These look fantastic, Kevin.
Wow! These look so amazing! What a great and easy way to make these!
Yum! I’ve never thought of an onion gratin. I don’t know why, it seems like such a natural combination. Thanks for the idea and the recipe. I’m going to make this on the weekend.
mmmm i LOVE onions. i am bookmarking this!
Wow.. looking amazing. I love onion.
Thanks for recipe, let me try.
This was the favorite dish at Thanksgiving this year! It has already been requested for Christmas too.
I made these last night – AMAZING! They are one of my new favorite dishes!!
Can anything be substituted for white wine?
Shannon: A chicken or vegetable broth could be used as a substitute for the white wine.
I have made this several times now, twice with Texas 1015 sweet onions and a few times with large spring onions. Every time it is a raging success – even when I double or triple the recipe, it comes out fabulous every time. Thanks so much for sharing!
Nice Steakhouse dinner! I'm going to try the entire menu!
Thanks!
I have made this and it is delicious. When you transfer the onions and add the cream sauce, do you layer the onions, and if so how deep?
Fifty four “reviews”. Three made the recipe and 3 more may have tried it (could not tell from their comments). Please make the dish and give us your feedback. Meanwhile, have a wonderful Thanksgiving!