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You are here: Home / Recipes / Milk Calendar Hearty Sweet Potato Au Gratin

Milk Calendar Hearty Sweet Potato Au Gratin

September 15, 2020 *Updated* September 18, 2020 / By: Gloria Duggan | Homemade & Yummy 136 Comments

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Recipe Jump

Sweet Potato Au Gratin is the ultimate comfort food casserole recipe.

Thinly sliced sweet potatoes, smothered in a cream sauce, topped with cheese. Hearty and delicious.

 Hearty Sweet Potato Au Gratin compared to picture on actual calendar.

This au gratin potato recipe was originally posted in the 41st edition of the Milk Calendar and I shared it in December 2017 as a sponsored post.

I was thrilled when I was asked to recreate the January 2018 recipe Hearty Sweet Potato Au Gratin because I am a potato lover.

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I was so excited when I was asked to take part in the #MilkCalendar campaign that year. My fridge is ALWAYS stocked with several varieties of cheese. I use it in delicious recipes for any meal of the day. When I want a snack, crackers and cheese are my “go-to” options most days of the week.

RECIPE and INSTRUCTIONS for this sweet potato gratin recipe can be found at the bottom of this post.

These scalloped sweet potatoes are simple and oh so delicious. Cheese is the most important factor in au gratin potatoes.

Au Gratin ingredients, sliced sweet potatoes, milk and cheese.

You Will Need:

  • sweet potatoes
  • butter
  • garlic
  • flour
  • cream
  • sharp cheddar cheese
  • fresh thyme
Best cheese for potatoes au gratin?

You will want to select sharp, bold cheeses. Old cheddar, gruyere, Swiss or feta would be awesome choices.

What is the difference between scalloped potatoes and au gratin?

Most people will say there is NO difference. Both use thinly sliced potatoes cooked in a casserole dish. Scalloped potatoes ALWAYS have a cream sauce. Au gratin is ALWAYS is cooked with cheese. This recipe contains both. Scalloped potatoes usually have a breadcrumb topping. Gratin Dauphinois does not.

Preparing This Sweet Potato Au Gratin Bake

These cheesy au gratin potatoes are not difficult. You have a couple of parts to this recipe. The cream sauce, and the layering of the casserole. See the recipe card for the exact instructions, but here is the quick low down.

Milk getting poured over potatoes before cooking.

Step ONE:

  • Peel and slice your sweet potatoes (about ⅛ inch).
  • Grate your cheese.
  • Preheat the oven, and prepare a casserole dish.
Hearty Sweet Potato Au Gratin ready to go into the oven.

Step TWO:

  • Make the cream sauce in a medium saucepan.
  • This will take about 4-5 minutes.
Cheese getting sprinkled over potatoes going into the oven.

Step THREE:

  • Layer the casserole.
  • Start with the potatoes.
  • Add some cream sauce, and thyme.
  • Repeat the layers.
  • Cover and bake.
  • Remove from oven and take off the foil.
  • Add the grated cheese and bake uncovered until bubbly.
Sweet Potato Au Gratin right out of the oven.

This Sweet Potato Au Gratin has already become a favourite here. We like to make it different each time by switching up the cheese.

Perfect for any night of the week. Awesome on the holiday dinner table too. It is the perfect side to Crispy Baked Chicken Drumsticks.

Craving more delicious potato recipes?

Looking for another sliced potato recipe? Crispy Cast Iron Potatoes make the perfect side to any meal of the day.

How about a delicious one-pan dinner? Easy Corned Beef and Potato Skillet is perfect. In fact, we love this on St. Patrick’s Day. A little twist on corned beef and cabbage.

If you are a salad lover, this Warm Potato Salad with Dill & Smoked Salmon is out of this world. In fact, I have a great potato salad roundup with 27 mouthwatering recipes.

Need the perfect party appetizer? Smoked Salmon Potato Appetizers are elegant and easy to prepare. They fly off the party tray.

I don’t know of anyone who does not love fries. Crispy Spicy Fries are a healthy alternative since they are made in the air fryer.

Be sure to CLICK THE SUBSCRIBE BUTTON located in the TOP MENU. You will get a FREE PRINTABLE and recipes! FOLLOW ME on social media too.

In case you didn’t get one of these FANTASTIC calendars, don’t fret, I’ve got you covered. Visit MilkCalendar.ca to find out how to order a copy. Be sure to have a look at all the great online recipes and helpful videos too. I know lots of people who have been collecting  these calendars for years.

Sweet Potato Au Gratin Pin Image
Comparing actual casserole to the picture Milk Calendar Hearty Sweet Potato Au Gratin photo.

Milk Calendar Hearty Sweet Potato Au Gratin

Milk Calendar Hearty Sweet Potato Au Gratin is just one of the many recipes available in the 2018 edition of the Milk Calendar by Dairy Farmers of Canada.
5 from 46 votes
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Course: Side Dish, Vegetable
Cuisine: Canadian
Keyword: Fall/Winter
Prep Time: 20 minutes
Cook Time: 43 minutes
Total Time: 1 hour 3 minutes
Servings: 10
Calories: 163kcal
Author: Gloria Duggan | Homemade & Yummy

Ingredients

  • 1 ½ pounds sweet potatoes
  • 2 tablespoons butter
  • 1 clove garlic (minced)
  • ½ teaspoons salt
  • 2 tablespoons all-purpose flour
  • 2 cups 18% cream
  • 2 tablespoons fresh thyme (chopped)
  • ½ cup Canadian cheddar (shredded)
US Customary – Metric

Instructions

  • Preheat oven to 375º F, and grease a 8×8 inch baking pan. Set aside.
  • Peel potatoes and carefully slice into ⅛ inch thick rounds. Set aside.
  • Grate/shred cheese. Set aside.

To make the Cream Sauce:

  • In a medium saucepan melt butter over medium heat.
  • Add garlic and salt. Stir 1 minute.
  • Whisk in flour until combined.
  • Gradually add cream, whisking until combined and smooth.
  • Bring to a boil, and heat until thickened (2-3 minutes), whisking occasionally. Remove from heat when done.

To layer the Sweet Potato Au Gratin:

  • Layer ½ the potatoes into the prepared baking dish.
  • Scatter ½ the chopped thyme on top.
  • Top with ½ the cream sauce.
  • Repeat with the potatoes, sauce and thyme.
  • Press down slightly to even out layers and get all potatoes covered in cream. 
  • Cover with foil, and bake for 30 minutes.
  • Take dish out of the oven, and remove foil.
  • Sprinkle grated cheese (and additional thyme if you like), and bake uncovered for 15 minutes until top is bubbly and deep golden brown.
  • Remove from oven and let stand for 10 minutes.
  • ENJOY!

Nutrition Information

Calories: 163kcal | Carbohydrates: 8g | Protein: 3g | Fat: 13g | Saturated Fat: 13g | Sodium: 179mg | Fiber: 0.8g | Calcium: 930mg

Notes

Have fun with this delicious recipe. You can use a combination of sweet potatoes and Yukon Gold. Also…try a different flavour of cheese.
**NOTE** To make cutting the potatoes easier, you can use a mandolin OR thinly cut a slice off the potato lengthwise, so that it will lay flat. Slice crosswise.
Tried this recipe?Take a picture and tag @homemadeandyummy
Nutritional information on this site is generated via a plugin. I am not responsible for the accuracy of the plugin information.

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MEET THE AUTHOR

Gloria Duggan is the author for Homemade & Yummy, where she creates fun and easy recipes. She is also a brand ambassador/influencer for well-known companies. Gloria has judged food competitions and has posted about local food events. Gloria's work has been featured in magazines, and she has been interviewed on several podcasts. Read More…

Reader Interactions

Comments

  1. Chandice Probst

    September 25, 2020 at 3:05 pm

    What a great way to use sweet potatoes in a delicious comfort dish. Thank you for the easy recipe and directions.

    Reply
    • Gloria | Homemade & Yummy

      September 26, 2020 at 9:01 am

      You are very welcome….enjoy!!

  2. Amy Liu Dong

    September 25, 2020 at 11:28 am

    Wow! I may say that this recipe looks really delicious and very enticing to the eye. The overload cheese stuff on this dish is so mesmerizing.

    Reply
    • Gloria | Homemade & Yummy

      September 26, 2020 at 9:02 am

      Well we all know potatoes and cheese are the perfect match…hope you give this gratin recipe a try.

  3. Sharon

    September 22, 2020 at 10:38 am

    The sweetness of the potatoes and the creaminess of the cheese sauce makes a wonderful combination in this dish.

    Reply
    • Gloria | Homemade & Yummy

      September 23, 2020 at 8:40 am

      This really is a hearty and delicious dish. Comfort food at it’s best.

  4. Andrea Metlika

    September 17, 2020 at 2:09 pm

    This looks and sounds incredible. I love that you use sweet potatoes for this dish. Cannot wait to try this!!!

    Reply
    • Gloria | Homemade & Yummy

      September 18, 2020 at 8:56 am

      This really is the ultimate comfort food. Hope you give it a try.

  5. Laura

    September 17, 2020 at 1:00 pm

    Great idea, I never made a gratin with sweet potatoes. Why I didn’t think about this before! Making it asap

    Reply
    • Gloria | Homemade & Yummy

      September 18, 2020 at 8:57 am

      You really need to give this a try. A nice change from the traditional version.

  6. Katie

    September 17, 2020 at 12:52 pm

    I CANNOT wait to try this. Looks SO good!

    Reply
    • Gloria | Homemade & Yummy

      September 18, 2020 at 8:57 am

      I know you will love it. ENJOY!

  7. Tania | Fit Foodie Nutter

    September 17, 2020 at 12:44 pm

    This i such a great cosy meal for all the family, especially for the fall season! Can’t wait to try this at the weekend!

    Reply
    • Gloria | Homemade & Yummy

      September 18, 2020 at 8:58 am

      My family loves this version….and they don’t like regular scalloped potatoes.

  8. Courtney

    September 17, 2020 at 12:23 pm

    I’m not normally a big sweet potato fan other than fries but this recipe was a game changer! They are delicious prepared au gratin!

    Reply
    • Gloria | Homemade & Yummy

      September 18, 2020 at 8:58 am

      This really is a great way to enjoy sweet potatoes in a delicious casserole.

  9. Veena Azmanov

    February 04, 2018 at 8:09 am

    I am anything sweet potato anytime. I love au gratin and nothing beats a cheesy one. Love trying and experimenting with different cheese varieties. This sounds incredibly delicious. yum I think my kids will love this !

    Reply
    • Homemade & Yummy

      February 04, 2018 at 6:51 pm

      This was a pleasure to reproduce. Hope you give it a try.

  10. Riana

    December 20, 2017 at 10:14 pm

    Love love potato…

    Reply
    • Homemade & Yummy

      December 21, 2017 at 8:52 am

      So do we. Thanks for stopping by.

  11. Renee Gardner

    December 18, 2017 at 10:53 pm

    Milk, butter, cream, cheese, and sweet potatoes – you have my second most favorite list of comfort foods (the first one includes both pizza and pasta!). I never make casseroles because it’s just my husband and I, but in an 8×8 pan it might be something we can tackle together. Or, I could just make it while he is traveling and eat the whole thing myself?? Decisions, decisions…

    Reply
    • Homemade & Yummy

      December 19, 2017 at 9:44 am

      This is so good, it was hard not to eat the whole dish in one sitting.

  12. Sara

    December 18, 2017 at 2:43 pm

    Potatoes and cheese are literally my favorite combination of all time. But the fact that you are using SWEET potatoes is genius! I love that it lightens up the dish, and adds an entirely different layer of flavors. I cannot wait to try this!

    Reply
    • Homemade & Yummy

      December 18, 2017 at 10:05 pm

      This really is a delicious dish.

  13. Julie

    December 18, 2017 at 10:51 am

    I haven’t had anything au gratin in years, but seeing this immediately took me back to childhood Thanksgivings in my grandmother’s house, where she would always make the most deliciously rich and decadent potatoes au gratin. Love the sweet potato twist on a classic dish!

    Reply
    • Homemade & Yummy

      December 18, 2017 at 10:07 pm

      I finally LOVE that I can make a scalloped type of potato.

  14. Abby @ WinsteadWandering

    December 17, 2017 at 10:46 pm

    I’m sure the sweet potatoes are great, but I can’t get past that gorgeous, perfectly-browned cheese.

    Reply
    • Homemade & Yummy

      December 18, 2017 at 12:02 am

      Thanks so much, it is a really easy recipe to make.

  15. Jessica (Swanky Recipes)

    December 17, 2017 at 7:16 pm

    Can never have enough sweet potatoes and cheese this time of year. I love this as a side dish next to our Christmas spread. I love potato au gratin and I think I’ll serve it at our party this year to mix things up, yum!

    Reply
    • Homemade & Yummy

      December 18, 2017 at 12:04 am

      Enjoy it is easy to make and totally delicious to eat.

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