This low-carb potato gratin recipe will be your new favorite side dish.
Slices of daikon radish and onions are baked in a velvety cheddar cream cheese sauce.
Make this Comforting Keto Potato Gratin Recipe Because…
- This potato gratin dish has the same comfort-food flavor and texture as daikon radish fries, but with a creamy cheese sauce.
- This au gratin is rich and creamy with a hint of sweetness using radishes instead of potatoes.
- Easy to prep up to a day ahead, cover, and chill until ready to bake.
- Keto scalloped potatoes are so flavorful and comforting.
Low Carb Ingredient Building Blocks
Daikon: Peeled and sliced daikon radish makes the perfect substitute for potatoes because it has the same texture and mild flavor. Choose daikon radishes that are firm and clean without any cuts in the flesh.
Sauce: Use full-fat cream cheese and heavy cream for the best flavor. Cheddar, Monterey Jack, mozzarella, or any combination can all be used.
Variations: Make it a main dish and add some leftover ground beef, shredded chicken, diced ham, or bacon crumbles. Stir in a mild garlic and herb seasoning or a zesty southwestern blend to match the menu.
How to Make Keto Potatoes Gratin
- Prepare the daikon radish, cook, and season.
- In a saucepan mix the cheese mixture (recipe below).
- Place half of the radish slices, onion, and sauce in a casserole dish.
- Top with remaining radish slices and sauce. Cover. Bake.
- Uncover, add more cheese, and bake again.
Cheese the Day With These Gratin Tips & Tricks
- Be sure to cut the radish into even slices so they cook evenly. Using a mandolin will ensure even slices.
- Let the cream cheese come to room temperature for faster and easier blending in Step 4.
- Pre-shredded cheese works in this recipe, but if you shred it from a block, the sauce will be smoother.
- For a crispy topping, sprinkle some keto breadcrumbs on the top of the uncovered casserole at the end of Step 7.
Storage Solutions
Keep leftover keto potato gratin in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or the oven.
Keto Side Dishes
Did your family enjoy this Keto Daikon Potato Gratin Recipe? Be sure to leave a comment and rating below.
Keto Daikon Potato Gratin Recipe
Equipment
Ingredients
- 1 large daikon radish
- 1 tablespoon olive oil
- ½ onion very thinly sliced
Sauce
- 4 ounces cream cheese
- 2 tablespoons butter
- 1 clove garlic
- 1 cup chicken broth
- ½ cup heavy cream
- 1 cup cheddar cheese
Instructions
- Preheat oven to 375°F.
- Grease a 3 quart baking dish with butter.
- Peel the daikon radish and slice into ¼" slices. Bring a pot of water to a boil and add slices. Cook 7-9 minutes or just until tender-crisp. Drain well, season with salt & pepper.
- Heat cream cheese and butter in a skillet until melted and creamy. Add garlic, broth and cream. Simmer until slightly thickened, about 5 minutes.
- Place half of the daikon slices in the baking dish. Top with ½ of the onions and ½ of the cream sauce.
- Add remaining daikon and remaining cream sauce.
- Cover with foil and cook 40 minutes. Remove foil, top with cheese if using and cook an additional 15-20 minutes or until tender and cheese is browned.
Notes
Nutrition Information
Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.
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REPIN this Potato Gratin Recipe!
PRETTY GOOD !!!
Tweaked the recipe a tad.
i increased the cream and added a bit of water rather than broth (as i didn’t have any vege broth on hand)
The recipe doesn’t say when to add the cheese in the sauce, so i melted the butter and cream cheese, then added and melted the cheese. i had it on the stove for a good 15 min and it never came to a simmer, so turned off anyway.
i put the daikon in two dishes: one i used the sauce and parmesian cheese and the other one i sprinkled some Italian seasoning over the daikon, added the sauce and put some cheese in between the layers. i added parm cheese at the end on top.
the sauce was a bit fluid, but i think it will thicken as it sits a bit.
i had fasted 26hr, so i was anxious to dig in!!!! i’ve not had daikon before, so was pleasantly surprised at the texture. i didn’t feel that it had any specific taste, so was glad i added the seasonings. the cheese sauce is good!
Good enough to try again and maybe tweak a bit more. I wanted to throw some broccoli in, but hadn’t gone to the store — next time!!
Hi, thank you for sharing! I’m glad you enjoyed it. The cheese is added in step 7, hope that helps for next time.
My son is low carb and struggles to find anything he likes other than meat and cheese. The only vegetable he’s been eating has been broccoli. He won’t eat cauliflower or squash at any form. He absolutely loved this. It’s so nice to have a side dish for him for the holidays. I’ve been making him low carb lasagna with noodles made out of cheeses and egg as a side dish just so he would have something yummy to eat at Thanksgiving and Christmas. Thank you for this recipe and for introducing us to the daikon radish. My husband does Weight Watchers so now we’re trying to find ways to use the daikon for his diet also.
I am so glad to hear that your son loved this recipe Joni!
I tweaked even more than New to Keto did, because I used it as a basis for a low-carb version of a ham and potato casserole I used to make before my husband was diabetic.
I used an enormous daikon, but it was not too much. I’ll drain it better next time. I used a whole onion and added a red bell pepper. I think I’ll precook the other veggies before baking as well. I also added about a pound of cubed ham.
I doubled all of the sauce ingredients except the chicken broth. (I used extra vegetables, after all.) Some of the cheddar cheese I melted into the sauce and topped with extra. I also added my “secret” ingredient: dill weed, both fresh and dried.
Like New to Keto’s version, my sauce was a bit thin. I might omit the broth entirely and use even more cheddar cheese next time. But my husband was still pleased with this. Thank you for the recipe!
Your version sounds wonderful!
It was so good but next time I’m gonna use more cheese on each layer but seriously so good!!
I am so glad you enjoyed this recipe Stephanie!
Fantastic! Made this recipe exactly as written. Made sure to dry off the parboiled daikon. Better with roast ham than traditional scalloped potatoes. Thank you!
So glad you loved these Kelle!
This was GREAT! Like really good! I didn’t see anywhere to add the oil but I made it without and it turned out perfectly! I paired with a ham and it was wonderful.
So happy you enjoyed them, Angie!
This was wonderful and really easy! As others have stated, my sauce never tightened up, even after adding some xanthan gum. So, I’ll reduce the amount of broth I use next time. Aside from that small adjustment, this is definitely going become a frequent side dish at my house. Thank you so much for sharing!
I am so glad you enjoyed this recipe, Diane! Thank you for leaving a comment!