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Lightened Scalloped Potatoes

18 Reviews Recipe
gf nf vg
By: Erin Antoniak • Published On March 22, 2021

This post may contain affiliate links. Please read my disclosure policy.

This week, try Lightened Scalloped Potatoes – a hearty dish filled with garlic, onion, thyme, and savory cheesy flavors. With 12 servings, it’s perfect for a crowd!

lightened scalloped potatoes

The best scalloped potatoes recipe of all time

I’m a huge fan of hearty dishes, as you can probably tell if you’ve browsed through my blog. I mean, Pizza Casserole or Pumpkin Chili, anyone? It didn’t take long for me to realize that a good ol’ classic cheesy potato recipe was missing!

When I discovered this, I knew I had the perfect recipe to share: lightened scalloped potatoes. This dish is the best comfort meal, as it’s filled with rich potato slices, cheesy deliciousness, and satisfying flavors. It makes a bunch (12) servings, so it’s perfect for feeding to a crowd!

lightened scalloped potatoes

Ingredients in lightened scalloped potatoes

This recipe comes together with a blend of potatoes, onion, garlic, and loads of other flavorful ingredients. When all is said and done you’ll have a heaping dish of the most delicious scalloped potatoes you’ve ever tried!

  • Yukon gold potatoes: First up, we’ll start with about 3 pounds of yukon gold potatoes. If you prefer red, you can also use them.
  • Butter: Next, we’ll use 1 tbsp of butter.
  • Yellow onion: Dice up 1/2 of yellow onion for flavor (you can use white if preferred).
  • Garlic: As for the garlic, you’ll need 3 cloves, minced.
  • Thyme: Include 1 tbsp of fresh thyme for a delicious taste.
  • Salt & Pepper: Next, add 1 tsp of salt and 1/2 tsp of pepper.
  • Cayenne: Include a pinch of cayenne for a slight (but not overpowering) spice.
  • Milk: 1 cup of milk will be used to get the correct texture.
  • Arrowroot powder: Include 1 tbsp of arrowroot powder, or 1/2 tsp of cornstarch.
  • Cheese: Finally, set aside 1 cup of shredded white cheddar for that perfect cheesy taste.
making scalloped potatoes

Tools needed to make cheesy scalloped potatoes

Ready to dive in to creating this mouth watering recipe? Below is a list with all of the tools needed to make it happen. If you have a mandolin or vegetable slicer, I recommend using it to achieve the desired thickness for the potato slices (1/8 inch).

  • Nonstick spray
  • Baking dish
  • Cutting board
  • Chopping knife
  • Sauce pan
  • Spatula or stirring utensil
  • Whisk
  • Spoon

For measuring, you will need the following sizes: 1/2 tsp, 1 tsp, 1 tbsp, and 1 cup.

making scalloped potatoes
making scalloped potatoes

How to make lightened scalloped potatoes

Lightened scalloped potatoes require about 20 minutes of prep time followed by 40 minutes of cooking time. The end result produces 12 heaping, satisfying servings perfect for serving up to your family or friends (or saving for yourself, because with a flavor this good, you’ll be tempted to).

Begin by preheating the oven to 400ºF and spraying a 7×11 dish with nonstick spray.

Thinly slice the potatoes to about 1/8 inch thick slices. Layer half of the potatoes on the bottom of the pan, in overlapping layers.

Add butter to a sauce pan set over medium high heat. Once melted, add the onion and sauté for a few minutes until slightly softened. Add the garlic, thyme, salt, pepper, and cayenne and stir until well combined.

Whisk in the milk and arrowroot powder and bring to a slow simmer for a few minutes, stirring occasionally. When the mixture begins to thicken, turn off the heat.

Next, add 1/3 of the cheddar cheese to the milk and stir to melt.

Pour half of the cheese sauce over the first half of the potatoes and spread out with a spoon.

Add the rest of the potatoes on top in a stacked pattern. Pour the rest of the cheese sauce on top of the potatoes, and spread evenly with a spoon.

Top with the remaining cheese and bake for 40-45 minutes, or until golden brown and bubbly.

lightened scalloped potatoes

Recipe Tips

The perfect scalloped potatoes do exist, and these tips will help you achieve it!

Put the slices into water
As you’re slicing the potatoes, slip them into a bowl of water. This helps to remove the excess starch and can makes for crispier slices.

Using a different sized dish
Though I recommend a 7×14 dish, you can also use a 9×13, or whatever size you have handy. The only difference will be in the thickness of the final recipe. Larger pan = thinner potato mixture.

Pre-baking scalloped potatoes
The beauty in this dish is that you can actually prep it ahead of time! Bake as directed, and let cool completely before refrigerating. When ready to eat, simply reheat in the oven for about 30-35 minutes.

Storing leftovers
Extra lightly scalloped potatoes can be refrigerated and enjoyed for up to 3 days. Keep them in a tightly sealed container to maintain freshness.

If you liked this recipe, you’ll want to try these!

Need some more potato heartiness in your life? Try these recipes for some potato-rich meals filled with your favorite ingredients.

  • Baked Potato Cauliflower Soup
  • Buffalo Chicken Sweet Potato Casserole
  • Easy Roasted Breakfast Potatoes
  • Sweet Potato Egg Breakfast Casserole
  • Healthy Sweet Potato Muffins
lightened scalloped potatoes
5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 18 reviews

Lightened Scalloped Potatoes

This week, try Lightened Scalloped Potatoes – a hearty dish filled with garlic, onion, thyme, and savory cheesy flavors. With 12 servings, it’s perfect for a crowd!

Prep: 20 Cook: 40 Total: 1 hour
Yield 12 servings 1x
Scale
Print Pin it Rate

Ingredients

  • 3 lb yukon gold potatoes
  • 1 tbsp butter
  • 1/2 yellow onion, diced
  • 3 cloves garlic, minced
  • 1 tbsp fresh thyme
  • 1 tsp salt
  • 1/2 tsp pepper
  • pinch cayenne
  • 1 cup milk
  • 1 tbsp arrowroot powder (or 1/2 tbsp cornstarch)
  • 1 cup shredded white cheddar cheese

Instructions

  1. Preheat oven to 400 and spray a 7×11 dish with nonstick spray. a 9×13 will also work, it will just be thinner.
  2. Slice potatoes thin, about 1/8th inch thick. Layer half of the potatoes on the bottom of the pan, in overlapping layers.
  3. In a sauce pan, turn on medium high heat and add butter. Once melted, add in onion and saute for a few minutes until slightly softened. Add in garlic, thyme, salt, pepper, and cayenne and stir until combined well.
  4. Whisk in milk and arrowroot powder, and bring to low simmer for a few minutes, stirring occasionally. The mixture should begin to thicken. Turn off heat.
  5. Add in 1/3 of the cheddar cheese to the milk and stir to melt.
  6. Pour half of the cheese sauce over the first half of the potatoes and spread out with spoon.
  7. Add the rest of the potatoes on top in a stacked pattern. Pour the rest of the cheese sauce on top of the potatoes, and spread evenly with spoon.
  8. Top with remaining cheese and bake for 40-45 minutes or until golden brown and bubbly.
Author: Erin Antoniak Category: sides, holiday, gluten-free, dinner Method: oven Cuisine: American Diet: Gluten Free
lightened scalloped potatoes

Did you make this?

Leave a comment below and tag @erinliveswhole on social media!

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There may be affiliate links in this post! By purchasing a product I recommend, I may receive a small compensation. However, I only recommend products I absolutely love and use myself. Thank you for supporting Erin Lives Whole, it helps keep this blog afloat 🙂

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Recipe Rating




  1. bill says

    Posted on 4/5 at 12:25 pm

    how would buttermilk work in place of whole milk?

    Reply
    • Erin says

      Posted on 4/8 at 2:29 pm

      Hi Bill, buttermilk should work great. Let me know how your potatoes come out!!

      Reply
  2. Terri says

    Posted on 12/21 at 12:58 pm

    When reheating for 30-35 mins. What temp do you suggest to reheat at?

    Reply
  3. Adriana says

    Posted on 12/18 at 8:30 am

    Hi,
    This recipe sounds delicious and healthier than others. I’m going to make it for Christmas dinner. What type of milk do you recommend so that it’s not runny?

    Reply
    • Erin says

      Posted on 12/22 at 4:01 pm

      Hi Adriana, I prefer whole milk! Let me know how yours comes out!

      Reply
  4. Jennifer says

    Posted on 11/17 at 4:02 pm

    Can I put this all together and keep in refrigerator for a few hours before baking?

    Reply
    • Erin says

      Posted on 11/17 at 6:51 pm

      Yep! Will work great 🙂 Just let sit out about 1 hour before baking.

      Reply
      • Dawn says

        Posted on 4/5 at 12:55 pm

        Mine came out runny. Any idea why? I did use skim milk.

      • Erin says

        Posted on 4/8 at 2:30 pm

        Hi Dawn, yes, you need a milk with some fat content in it! 🙂

  5. Teresa says

    Posted on 4/19 at 10:13 am

    Making these for Easter dinner! Sounds good, healthy, easy. Thank you!
    Have a blessed Easter!

    Reply
    • Erin says

      Posted on 4/21 at 6:30 pm

      Hi Teresa, so glad you liked them!!

      Reply
  6. Terri says

    Posted on 1/16 at 10:10 am

    What is the servint SIZE?

    Reply
  7. Alyssa says

    Posted on 6/4 at 3:02 pm

    Normally I’d be intimidated by this type of recipe but you made it so simple to make and it turns out absolutely delicious! A perfect side dish full of flavor and comfort.

    Reply
    • Erin says

      Posted on 6/11 at 4:16 pm

      Hi Alyssa, so happy you loved them! 🙂

      Reply
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I’m Erin. Creator of Erin Lives Whole, a food blog with delicious and easy healthy recipes that will leave you feeling good. We’ve got everything from wholesome baked goods to comforting savory dishes. I can’t wait to see what you whip up! Read More...

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Lightened Scalloped Potatoes
Lightened Scalloped Potatoes