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    Home » Side Dishes

    French Onion Potato Bake

    Modified: Nov 20, 2021 · Published: Feb 11, 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.

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    • 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!

    📖 Recipe

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    close up of french onion potato bake on a blue plate
    5 from 128 votes
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    French Onion Potato Bake

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

    Video

    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

    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 Cocktails
    Air Fryer Frozen French Fries (Instant Pot) »

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    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
    « Older Comments
    5 from 128 votes (108 ratings without comment)

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