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The best part about this rustic potato gratin is that it skips all the fuss! It’s as low-maintenance as it gets! No peeling, no layering; just sliced potatoes tossed in a rosemary, Parmesan, and cream then poured straight into the baking dish. With a touch of lemon zest and fresh chives, it’s the ultimate effortless side that feels fancy without the extra work.
Here is Why This Rosemary Potato Gratin Recipe Works
No Peeling Required: Skip the peeler! Leaving the skins on adds a rustic touch and saves you time. Plus, it brings extra flavor and texture.
All-in-One Mixing: Forget the endless layering; just toss everything in one bowl and pour it in. Easy, quick, and all the flavor without the fuss.
Rosemary Parmesan Goodness: Creamy layers infused with rosemary, Parmesan, and a hint of lemon zest make this gratin anything but basic.
Bubbly, Golden Perfection: Bakes up with a crispy, golden top and tender potatoes underneath—a crowd-pleaser with minimal effort!
Simple Ingredients
- Produce: Russet potatoes, fresh rosemary, lemon zest, fresh chives
- Dairy: Heavy cream, Parmigiano-Reggiano
- Pantry Seasonings: Salt, pepper
If you like this, try more potato recipes like our roasted baby potatoes or our goat cheese potato au gratin.
Recipe Variations
Truffle and Sage Potatoes au Gratin: Substitute the rosemary with fresh sage and drizzle in 1-2 teaspoons of truffle oil before baking.
Gruyere and Garlic Au Gratin Potatoes: Replace the Parmesan with Gruyere cheese and add 2-3 minced garlic cloves to the cream mixture.
Bacon Cheddar Ranch Potato Gratin: Mix in ½ cup of crispy crumbled bacon and swap the Parmesan for sharp cheddar cheese. Stir 1 tablespoon of ranch seasoning into the cream.
Garlic and Fontina au Gratin Potatoes: Swap the Parmesan for creamy Fontina cheese and add 3-4 minced garlic cloves to the cream mixture.
Tips for Success
- Russets work best here, they have a starchy texture which helps thicken the creamy cheese sauce.
- Slice the potatoes ⅛-inch thick. A mandoline or food processor works best for this.
- Leaving the skins on adds flavor and saves prep time. Just scrub the potatoes well before slicing.
- If you want to peel the potatoes, go for it! It’s all about your preference.
- Let the au gratin potatoes rest for 5-10 minutes after baking to help thicken the sauce.
Storage
Fridge: To store leftover potato gratin, allow it to cool completely before transferring it to an airtight container. It will keep in the refrigerator for up to 3 days.
Freezer: Portion the gratin into freezer safe containers, and store it for up to 3 months. When you’re ready to enjoy it again, thaw it in the fridge overnight.
To reheat, place the gratin in an oven-safe dish, cover with foil, and warm it in a 350°F oven for about 20-25 minutes, or until heated through. Or just zap individual servings in the microwave.
Au Gratin Potatoes with Parmesan Cheese
This rustic potato gratin keeps things simple yet impressive; no peeling, no layering, just creamy, cheesy goodness with rosemary and lemon. Perfect for holiday spreads or cozy dinners. Serve it with our roast lamb or spiral ham
This no peel potato gratin recipe has been slightly adapted from Tyler Florence.
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Rosemary Potato Gratin
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Ingredients
- 2 pounds russet potatoes, (such as Idaho potatoes)
- 2 cups heavy cream
- 1 cup grated Parmigiano-Reggiano
- 3 tablespoons chopped fresh rosemary
- zest of half a lemon
- 1 teaspoon Kosher salt
- ½ teaspoon freshly ground black pepper
- 3 tablespoons chopped fresh chives as garnish
Instructions
- Preheat the oven to 375°F.
- Butter a gratin dish or a shallow oven-proof baking dish, or use non-stick spray. Set aside.
- Scrub the potatoes clean and slice them ⅛-inch thick. A mandoline slicer or food processor with a slicing attachment work well for getting those thin slices.
- In a large bowl, toss the potato slices with the heavy cream, cheese,, chopped rosemary, lemon zest, salt, and black pepper until everything is evenly coated.
- Transfer the mixture to the prepared baking dish, spreading it out evenly.
- Bake in the oven for 50 to 60 minutes, or until the top is bubbly and golden brown. The potatoes should be tender when pierced with a fork
- Remove from the oven and let the gratin rest for 5 minutes. Garnish with chopped fresh chives before serving.
Video
Notes
- I used a mandoline to slice the potatoes but you can also slice the potatoes using a food processor with a slicing attachment of ⅛-inch thickness.
- Peeling is optional! If you leave the skins on, scrub them well.
- Let the gratin rest for 5 minutes after baking. This allows the sauce to thicken making it easier to serve.
- You can prepare the dish in advance, cover it with foil, and refrigerate it for up to 24 hours before baking.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Like this recipe? Rate & comment below!
That is such a BEAUTIFUL dish of potatoes. I love everything about it!
Thank you, Maureen…:)
Oh my gosh this looks amazing!!
Thanks, Trish, it is amazingly delicious! Hope you try it….Hope you have a wonderful Easter celebration. 🙂
I love a good, cheesy gratin. And potato gratin might be the best of all. I’ll be making something similar for Easter, too!
Thanks, John…have a great Easter celebration!