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    Home » Side Dishes » French Onion Potato Bake

    French Onion Potato Bake

    Published: Feb 11, 2021 · Modified: Nov 20, 2021 by Sula · This post may contain affiliate links · 42 Comments

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    Potatoes are my favorite comfort food staple. It’s always fun to find new ways to make them. Today it’s French onion potato bake. Similar to scalloped or au gratin potatoes, but easier and with a flavor twist.

    Ingredients needed

    • Potatoes (no surprise here)
    • Sour cream
    • Half and half
    • Shredded cheese – “Italian mixed”
    • French onion soup mix (dry packet)
    Ingredients for French Onion Potato Bake

    How to make these potatoes

    Whenever you make a potato dish like this, the important step is to get evenly sliced potatoes. If you have a mandolin, this is a good time to use it. (please watch your fingers!) Even better if you have a food processor – that’ll make very short work of the job!

    In a large bowl, mix together the sour cream, half and half and soup mix. Add in the potatoes and a little shredded cheese. Give it all a good stir to evenly coat those potato slices.

    Transfer to a casserole dish. I use a 2.5-quart dish but anything up to a 9x13 will work. Cover and bake for 50-55 minutes. Then uncover, sprinkle with more shredded cheese, and bake another 10-15 minutes (uncovered). The potatoes should be warm and bubbly and the top a beautiful golden brown.

    • partailly baked french onion potatoes
    • fully baked french onion potatoes

    Allow the potatoes to rest for 10 minutes before serving.

    Variations/ideas

    Feel free to play with this recipe and make it your own. Here are a few ideas:

    • Potatoes – I typically use russet potatoes for this but most any variety will work.
    • Dairy – you can substitute heavy cream or even milk for the half and half, just ensure you have a total of 2 cups of “dairy”, including the sour cream.
    • Cheese – oh, lots of possibilities here! Try sharp cheddar, or other cheese blends. I’m a big fan of Mexican cheese blend and will probably try that my next time I make this.
    • French onion soup mix – not always easy to find. I have made this with plain old Lipton onion soup mix and it was just fine. Not really sure what makes the other one “French” anyway. . .
    • Onion - feel free to slice up an onion and add it to the potato mix before baking. That will really "UP" the onion factor!
    • Baking dish – as mentioned above, I use a 2.5 quart casserole for this. However, it will work just fine in a 9x13 pan. And I actually think that type of pan might have some advantages. With the potatoes more spread out, they will likely cook faster. And, more importantly, these dimensions will result in more top crust. Therefore, more golden- brown cheesy goodness. Need I say more?
    pin for French onion potato bake

    You will love this French Onion Potato Bake with so many different meals!

    close up of french onion potato bake on a blue plate
    5 from 52 votes
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    French Onion Potato Bake

    The perfect potato side dish for holidays or any other meal
    Prep Time15 mins
    Cook Time50 mins
    Resting time10 mins
    Course: Side Dish
    Cuisine: American
    Servings: 8
    Calories: 412kcal
    Author: Sula

    Ingredients

    • 2 ½ - 3 pounds potatoes peeled
    • 1 cup sour cream
    • 1 cup half n half
    • 1 ½ cups Italian blend cheese, shredded
    • 1.4 oz package French Onion Soup Mix 40g

    Instructions

    • Preheat oven to 400F. Slice potatoes into ¼ -inch thick pieces. (A mandolin or food processor will ensure even thickness)
    • In a large bowl, whisk together sour cream, half and half and soup mix. Add potatoes and ½ cup shredded cheese. Stir to evenly coat.
    • Transfer to a 2.5 to 3-quart casserole dish or pan. Distribute mixture evenly in the pan, then cover pan with lid or foil.
    • Bake at 400F for 50-55 minutes. Check with a fork to verify the potatoes are tender.
    • Remove lid or foil and sprinkle the remaining shredded cheese evenly on top of the potatoes.
    • Return to oven and bake 10-15 minutes until the top is golden brown.
    • Remove from oven and allow to rest 10 minutes before serving

    Video

    Nutrition

    Calories: 412kcal | Carbohydrates: 60g | Protein: 13g | Fat: 14g | Saturated Fat: 8g | Cholesterol: 43mg | Sodium: 584mg | Potassium: 1444mg | Fiber: 7g | Sugar: 4g | Vitamin A: 435IU | Vitamin C: 62mg | Calcium: 214mg | Iron: 3mg

    Nutrition values are estimates only, using online calculators. Please verify using your own data.

    Meal ideas to serve with these potatoes

    • Pork tenderloin
    • Chicken legs
    • Meatloaf
    « Dragon Fruit Cocktail
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    Filed Under: Side Dishes Tagged With: Salads and sides

    Reader Interactions

    Comments

    1. Cindy L

      November 21, 2021 at 2:15 pm

      5 stars
      Such a simple recipe, yet I bet these potatoes taste amazing! Can't wait to try them.

      Reply
      • Sula

        November 21, 2021 at 8:19 pm

        The french onion soup adds a wonderful flavor!

        Reply
    2. Addie

      November 20, 2021 at 9:42 pm

      5 stars
      Total comfort food!

      Reply
      • Sula

        November 21, 2021 at 6:26 am

        The best!

        Reply
    3. Gina Abernathy

      November 20, 2021 at 8:50 pm

      5 stars
      ohhhh, French onion! I know this has to be delicious! Will have to try soon.

      Reply
      • Sula

        November 21, 2021 at 6:26 am

        You will love it!

        Reply
    4. Shilpa

      November 20, 2021 at 2:51 pm

      5 stars
      Love the use of French onion soup mix in this. Thanks for sharing

      Reply
      • Sula

        November 20, 2021 at 4:12 pm

        You're so welcome!

        Reply
    5. Dawn Conklin

      November 20, 2021 at 10:32 am

      5 stars
      This is so delicious and easy to make! We made it as a side dish to go with meatloaf last night - definitely making it again.

      Reply
      • Sula

        November 20, 2021 at 4:12 pm

        Oh man this would be the best with meatloaf! The ultimate comfort food meal!

        Reply
    6. Rosanna

      November 20, 2021 at 10:15 am

      5 stars
      I love French onion anything and this was delicious!

      Reply
      • Sula

        November 20, 2021 at 4:12 pm

        It really adds a special flavor!

        Reply
    7. Giangi Townsend

      November 20, 2021 at 8:01 am

      5 stars
      sounds intriguing, the French onions soup, however, all the other ingredients are my favorite. A must-try looks amazingly yummy and perfect for the holiday season.

      Reply
      • Sula

        November 20, 2021 at 4:14 pm

        Definitely works great for a holiday meal! Enjoy!

        Reply
    8. MARY

      October 10, 2021 at 9:38 am

      ITALIAN CHEESE??

      Reply
      • Sula

        October 10, 2021 at 10:49 am

        Yes, perhaps looking at the picture would make it more clear. It's called Six Cheese Italian blend. Hopefully this helps.

        Reply
        • Meryl

          November 20, 2021 at 8:37 am

          5 stars
          This potato bake turned out fantastic! Perfect for when we have family over, everyone loved it!

          Reply
          • Sula

            November 20, 2021 at 4:13 pm

            Oh yes its very filling, so you can feed a crowd with it!

            Reply
    9. Cindy Mom the Lunch Lady

      April 11, 2021 at 12:41 pm

      5 stars
      Oh wow this must taste so good! I love scalloped potatoes and the addition of French onion soup mix is a brilliant way to add flavour!

      Reply
      • Sula

        April 11, 2021 at 6:01 pm

        It really does add even more flavor!

        Reply
    10. Mihaela | https://theworldisanoyster.com/

      April 11, 2021 at 3:25 am

      5 stars
      Gosh, I haven't made this in ages! I'm really craving right now:)) It's only 9 am, but you just offered me the dinner recipe; I can spend the day in peace now:))

      Reply
      • Sula

        April 11, 2021 at 7:45 am

        I know what you mean, I get anxious if I don't have a plan for dinner by mid morning!

        Reply
    11. Gregory Halpen

      April 10, 2021 at 9:17 am

      5 stars
      Mmmmm this looks so warm and comforting! French onion soups reminds me of home - as a kid we ate it often.

      Reply
      • Sula

        April 11, 2021 at 7:46 am

        Yes this is definitely a great comfort food recipe!

        Reply
    12. Natalie

      February 23, 2021 at 10:31 am

      5 stars
      Love added french onion soup mix. I have to try this. Sounds delicious!

      Reply
      • Sula

        February 24, 2021 at 8:14 am

        It really adds a special something to the potatoes!

        Reply
        • Emily

          November 20, 2021 at 9:28 am

          5 stars
          I can’t wait to make this with French onion soup mix and all the cheese! What a great idea.

          Reply
          • Sula

            November 20, 2021 at 4:13 pm

            In my house, there's no such thing as too much cheese!

            Reply
    13. Chef Dennis

      February 22, 2021 at 7:24 pm

      5 stars
      This French Onion Potato Bake is making me drool!

      Reply
      • Sula

        February 23, 2021 at 5:39 am

        It's very yummy!

        Reply
    14. Emily Flint

      February 22, 2021 at 12:51 pm

      5 stars
      This french onion bake was SO amazing! Two of my favorite things together, potatoes and onion soup! You can't go wrong with this one and it's really easy to make.

      Reply
      • Sula

        February 22, 2021 at 1:58 pm

        I agree! I love the easy meets good combo!

        Reply
    15. Audrey

      February 22, 2021 at 9:54 am

      5 stars
      Easy and delish! Love this recipe.

      Reply
      • Sula

        February 22, 2021 at 11:23 am

        Thanks Audrey, I'm so glad to know you liked it!

        Reply
    16. Vincit Omnia

      February 13, 2021 at 8:43 am

      5 stars
      Great recipe! Thanks!

      Reply
      • Sula

        February 13, 2021 at 9:01 am

        I'm glad you enjoyed it!

        Reply
    17. Big Trouble

      February 12, 2021 at 8:57 am

      5 stars
      Oh my, these are the recipes that dreams are made of! I just wonder if it will taste as good vegan? I'm going to try! This one knocks it out of the park, Sula--thank YOU!

      Reply
      • Sula

        February 12, 2021 at 2:38 pm

        I think this would be great in vegan form, if you have a good dairy substitute. Oat milk maybe? The french onion soup really delivers the taste. 🙂

        Reply
        • Luisa | Coffee-Crafts-Chaos

          April 11, 2021 at 9:35 am

          5 stars
          Oohhh. A delicious sounding side! I am off to the store to buy the ingredients right now!

          Reply
          • Sula

            April 11, 2021 at 6:01 pm

            It will be delicious next to just about anything else you plan to make!

            Reply
            • HealthyHeartyWholesome

              November 20, 2021 at 7:48 am

              5 stars
              This sounds super yummy!

            • Sula

              November 20, 2021 at 7:51 am

              It's a great side with almost any meal!

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