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    You are in: Home / Recipes / Onion Gratin Recipe
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    Onion Gratin

    Onion Gratin. Photo by *Parsley*

    1/4 Photos of Onion Gratin

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    Total Time:

    Prep Time:

    Cook Time:

    1 hr

    15 mins

    45 mins

    WiGal's Note:

    After looking at the kind review of Chef#296809, I have revised it and made it myself. A recipe adapted from the Chilean Fresh Fruit Association but with quite a few changes. The directions do not include the time to make the hard boiled eggs. If you love cooked onion, I hope you give this a try! DH and I think it is delicious. And a great way to use those leftover hard boiled eggs and bacon.

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    Units: US | Metric


    1. 1
      In a large size heavy skillet melt the butter and cook the onions over medium heat until soft, between 15 and 20 minutes, stirring frequently with a wooden spoon. You do NOT want the onions to be crunchy later.
    2. 2
      Add flour, stirring, and cook about 1 minute.
    3. 3
      Gradually stir in milk and cook 4 minutes; add cream, salt, and pepper.
    4. 4
      Remove skillet from stove top and set aside to cool slightly.
    5. 5
      Preheat oven to 400*F.
    6. 6
      When oven is pre-heated, taste sauce and adjust with more salt and pepper to suit your taste preferences (I like to add quite a bit more pepper).
    7. 7
      After taste adjustment, add 1 beaten egg to the cooled onion mixture and whisk thoroughly to combine.
    8. 8
      Pour the onion sauce into a lightly sprayed pie dish.
    9. 9
      Cover with layer of egg slices and sprinkle with cheese.
    10. 10
      Bake until lightly browned, about 15 minutes-depends upon your oven.
    11. 11
      Top with bacon crumbles.
    12. 12
      Allow to set for 5 minutes so that it will set up and be easier to plate.

    Ratings & Reviews:

    • on October 13, 2013


      Great side dish; especially when you want something different. I use a mix of sweet onions and red onions (leeks would work well, too). I skipped the crumbled bacon, and it still was great. Nice and cheesy. Thanx for sharing!

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    • on May 18, 2012


      We really enjoy the taste of caramelized onions, so wanted to give this a try. Very nice. Unfortunately, it didn't set up quite how I expected, but still tasty. Made for Everyday Holiday Tag Game. :)

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    • on March 20, 2009


      Made as a prize for the *Best of 2008* cookbook game, we liked this a lot but the recipe & prep did require a fair amt of tweaking to get a good result. As agreed, I made this as a casserole in a pie plate as the volume of ingredients & layering did not allow prep in 4 individual serving dishes & this generously serves 6 IMO. I used a mix of red + white onion & the onion was still crunchy after 4-5 min. I agree 45 min is too long to cook the onion & feel cooking them to the start of caramelising would be ideal + add a flavour boost. There also was an excess of sauce & I suggest reducing the milk amt by 1/4 cup. Changing to 6 servings + reducing the milk amt will also improve the nutritional data. Salt & pepper are matters of pers pref, but I found it in need of both & suggest tasting the sauce & adjusting S&P prior to assembly. Oven time was spot-on for melting the cheese + lightly browning & I suggest a rest time b4 serving to allow for best texture. For me in the future, I will prob do 2 more things: 1) Omit the bottom egg layer as it tended to get lost there, but was welcome atop the mixture & 2) Add an egg to the sauce mix to aid set-up & ease of serving. Thx for sharing this recipe w/us. It is really quite good & I hope others will try it. :-)

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    Nutritional Facts for Onion Gratin

    Serving Size: 1 (213 g)

    Servings Per Recipe: 6

    Amount Per Serving
    % Daily Value
    Calories 285.5
    Calories from Fat 182
    Total Fat 20.2 g
    Saturated Fat 10.9 g
    Cholesterol 176.5 mg
    Sodium 392.0 mg
    Total Carbohydrate 12.9 g
    Dietary Fiber 1.4 g
    Sugars 3.8 g
    Protein 13.3 g

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