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Sweet Potato Gratin Recipe

Sweet Potato Gratin Recipe

—Taste of Home Cooking School
TOTAL TIME: Prep: 25 min. Bake: 30 min. YIELD:4-6 servings


  • 1 cup chopped onion
  • 1 garlic clove, minced
  • 5 tablespoons unsalted butter
  • 1/2 cup all-purpose flour
  • 1 teaspoon salt
  • Freshly ground pepper
  • 2 cups milk
  • 3 large sweet potatoes, peeled and shredded (about 4-1/2 cups)
  • 2 teaspoons prepared horseradish
  • 2 cups (8 ounces) shredded sharp cheddar cheese
  • 1 cup panko (Japanese) bread crumbs


  • 1. In a large saucepan, saute onion and garlic in butter; cook until tender. Whisk in the flour, salt and pepper until blended. Gradually add the milk. Bring to a boil; cook and stir for 2 minutes or until thickened. Remove from the heat; stir in the sweet potatoes and horseradish.
  • 2. Transfer half to a greased 9-in. square baking dish. Combine cheese and bread crumbs; sprinkle half over the sweet potato mixture. Repeat layers. Bake, uncovered, at 400° for 30 minutes or until bubbly. Yield: 4-6 servings.

Reviews for Sweet Potato Gratin

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collectorkerri User ID: 212062 214486
Reviewed Dec. 10, 2014

"I spent most of my life hating sweet potatoes because they were always served with the too-sweet brown sugar and marshmallow topping. I only found out after I made these that sweet potatoes are wonderful and it was just the way they always had been prepared that I did not like."

FlintJK User ID: 4515807 103161
Reviewed Aug. 31, 2013

"This is absolutely fantastic. I made it for the first time yesterday for a small group pot luck, and 2 people asked me for the recipe."

NYCWarrior User ID: 7339587 189592
Reviewed Aug. 13, 2013

"I was looking for savory sweet potato recipe and this was perfect! I made it with a salad and grilled steak, my family enjoyed it very much so. I added more garlic and used olive oil instead of butter... Very nice."

AprilnMarks Mom User ID: 6753371 109629
Reviewed Apr. 1, 2013

"I was so excited to make this for Easter. I followed the recipe and it was awful. The shredded potatoes did not cook. They never got soft. Each person had a pile of uncooked potatoes on their plate at dinner's end. Would not recommend making this recipe"

cee-jay User ID: 1579946 211443
Reviewed Oct. 29, 2012

"I second the last reviewers comment."

bjgrannie User ID: 6070794 174711
Reviewed Oct. 29, 2012

"Would appreciate it soooo much if you would include the nutrition information with your recipes. Thank you"

keverwann User ID: 1807985 119741
Reviewed Nov. 27, 2010

"This did not taste sweet at all. (Disagreement with another reviewer.)

Could not taste the horseradish either.
I used 1 jumbo sweet potato, not the 3 large, to get the 4 1/2 cups.
I also think that the 1 cup bread crumbs is WAY TOO MUCH. Ours were still very dry; if I make this again, we will only use 1/2 cup.
Also, what a waste of sharp cheddar! I couldn't taste it at all. I'll use mild or medium (something cheaper) next time.
Also, we think this serves about 9, not 4-6."

la210 User ID: 793713 117266
Reviewed Nov. 26, 2010

"This was very good. 3 large sweet potatoes are to many, I only used 2 and it was plenty.

I think this recipe serves more than mentioned."

NTH1250 User ID: 5622290 105640
Reviewed Nov. 22, 2010

"This was so very different from the usual recipe served on Thanksgiving....not sweet at all but I think it had to do as well with the potatoes not all are very swee...did not agree with that last review. All 10 of us loved it"

williamsegraves User ID: 3296408 169288
Reviewed Apr. 28, 2010

"You really need to love sweet potatoes to like this dish. It came out beautiful, but it was very sweet! Definitely a sweet potato lovers recipe."

Hopejr User ID: 955820 189360
Reviewed Nov. 15, 2009

"I halved the recipe to see if I would like it. I did and I will make it for Thanksgiving dinner at my daughters house. HR"

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