Guy Fieri’s Sweet Potato-Onion Gratin | Guy’s Big Bite | Food Network

Guy chars slices of and onion before layering them with Gruyere cheese and a horseradish cream sauce in a baked gratin!
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-Onion Gratin
Level: Intermediate
Overall: 1 hr 40 minutes
Active: 40 minutes
Yield: 4 to 6 portions

Active ingredients

2 tablespoons saltless butter, room temperature level
4 medium or 2 big sweet potatoes, peeled, sliced into 1/2-inch-thick rounds
2 medium or 1 large Vidalia onion, peeled, sliced 1/2-inch thick
1/4 cup canola oil
Kosher salt and freshly ground black pepper
2 cups half-and-half
4 tablespoons freshly grated horseradish
2 tablespoons fresh thyme leaves
8 ounces Gruyere cheese, grated (about 2 cups).


Prepare a grill for medium-high heat. Pre-heat the oven to 350 degrees F. Grease a 9-by-13-inch baking meal with the butter.

Oil the sliced sweet potatoes and onions with the canola oil and sprinkle with salt and pepper. Grill the sweet potatoes and onions up until somewhat charred on each side and just halfway prepared. Set aside.

Integrate the half-and-half, horseradish, thyme, 2 teaspoons salt and 1 teaspoon pepper in a bowl. Sprinkle one-third of the Gruyere in an even layer over the bottom of the ready baking meal. Layer one-third of the grilled sweet potatoes and onions on top of the Gruyere. Repeat two times ¿ one-third of the cheese, one-third of the vegetables ¿ to produce 3 even cheese-vegetable layers. Put the half-and-half mixture over the top, cover with foil and bake for 35 to 40 minutes. Discover and continue baking until the sweet potatoes are tender and the gratin is golden brown, another 15 to 20 minutes. Let rest for 15 minutes prior to serving.

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Man Fieri's Sugary food Potato-Onion Gratin|Man's Huge Bite|Food Network.

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About the Author: Yvette Cook


  1. I live on the caribbean island of ST KITTS………Sweet Potatoes grow by the “MILLIONS”. That’s a must try recipe.

  2. I’m in love 🥰…. Oh… And I’m sure the recipe is going to be delicious I can’t wait to try it… wink 😉

    1. Yep the way you sound I don’t need to try I already know it’s going to be delicious

    1. Why wait till tomorrow before trying it out? It’s so delicious when I did it

  3. if one day i log on and see gal fiona’s sweet potato onion gratin, i’d be very proud, nothing can be more stunning and brave.

  4. …graton? XD i have been saying gratin wrong my entire life also I’m so done at “we gotta offer one up” hallelujah 😂 guy is too funny.

  5. He keeps his sheet pans in his oven…or at least for the convenience of this episode …because I do the same

  6. This will be my new Thanksgiving sweet potato dish!!! No more brown sugar and mellos!

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