*Updated* Sep 18, 2020 / By: 136 Comments
This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Disclosure Policy.
XPinterestFacebookYummlyFlipboard
Jump To Recipe
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.
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.
NEW WEEKLY RECIPES DELIVERED RIGHT TO YOUR INBOX
Never Miss A Recipe, Sign Up Today!
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.
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.
Step ONE:
- Peel and slice your sweet potatoes (about ⅛ inch).
- Grate your cheese.
- Preheat the oven, and prepare a casserole dish.
Step TWO:
- Make the cream sauce in a medium saucepan.
- This will take about 4-5 minutes.
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.
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 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 toCLICK THE SUBSCRIBE BUTTONlocated in theTOP MENU.
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.
Pin
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 47 votes
Pin Recipe Print Rate Save
Course: Side Dish, Vegetable
Cuisine: Canadian
Prep Time: 20 minutes minutes
Cook Time: 43 minutes minutes
Total Time: 1 hour hour 3 minutes minutes
Servings: 10
Calories: 163kcal
Author:
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
More Recipes
- Roasted Blueberry Quinoa Breakfast Bowls
- Best Cinnamon Coffee Cake
- Air Fryer Fish Cakes
- Homemade Onion Gravy with Red Wine
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
Natalie
Sweet potato gratin… I never tried that one before. BUT it sounds and looks delicious. I will definitely make this. Lovely dinner option. Healthy too.
Reply
This is a winner in our house. Hope your family enjoys it as much as we do.
Sam
Wow this looks so creamy and delicious!! SO perfect for Thanksgiving. Can you make it ahead of time? Can’t wait to try it.
Reply
It reheats nicely….so YES. Happy Thanksgiving to you.
Jo
You had me at potato. Can I have have the whole casserole please. I looks so delicious! I love sweet potatoes.
Reply
This is a potato lovers dream recipe. I hope you give it a try.
Uma Srinivas
Looks like a perfect dish for the holiday season. Looks so creamy and yummy! I love sweet potato so I guess I might like this 🙂
Reply
This is comfort food on a whole new level of delicious. ENJOY!
Marisa F. Stewart
We made this recipe last year during the holidays. In fact we made a regular potato one because I was hoping I’d have this all to myself to finish. 😉 Well, there wasn’t one bit left from the dish. I thought the pan had been washed. And there was half of a pan left of the regular potatoes au gratin. This year I’ll make a double batch of this delicious side. So good.
Reply
I hear ya. I always have to make a double batch of these potatoes. So glad you enjoyed the recipe.
Erin
I’ve made sweet potato au gratin before but it didn’t look as amazing as yours! I need to try your recipe.
Reply
I hope you give this recipe a try. I can see why it was in the Milk Calendar!!
Andrea Howe
I love potato au gratin! But never thought to use sweet potatoes. Genius!! Can’t wait to try this – maybe a mix of cheeses YUM!
Reply
You can never go wrong with potatoes and cheese. Hope you give this a try.
« Older Comments
Leave a Reply
This site uses Akismet to reduce spam. Learn how your comment data is processed.
