If you’re looking for the ultimate showstopper for your next dinner party, you have to try these Hasselback Potatoes Au Gratin. This dish takes everything you love about a classic cheesy potato bake and turns it into a gourmet masterpiece with crispy edges and a velvety, rich center. It is the perfect side dish for a Christmas dinner, a cozy Thanksgiving feast, or even a fancy Easter brunch. Trust me, once you set this bubbling, golden-brown pan on the table, it will be the only thing anyone talks about!
INGREDIENTS
- 2 Tbsp Butter: I use this to sauté the onions and garlic; it adds that first layer of rich, savory flavor to the whole dish.
- 1 Med Onion (Minced): I make sure to mince this pretty small so it melts right into the cream sauce and gives you flavor in every bite.
- 3 Cloves Garlic (Minced): You can’t have au gratin potatoes without garlic! I sauté these just until they’re fragrant.
- 1 Tsp Dried Thyme: This is my favorite herb to use with potatoes—it adds a lovely earthy note that smells just like a holiday kitchen.
- 2 Cups Heavy Cream: This is the secret to that ultra-creamy potato bake; it creates a thick, luxurious sauce as it bubbles in the oven.
- 1/4 Tsp Black Pepper: I add just a little bit of heat to balance out all that rich cream and cheese.
- 1 Cup Gruyere Cheese (Shredded): This is the star of the show! Gruyere melts beautifully and has that slightly nutty flavor that makes this dish taste so fancy.
- 1 Cup Shredded Cheddar Cheese: I love using a sharp cheddar here for that classic, bold cheesy kick we all crave.
- 1/2 Cup Parmesan Cheese (Shredded): I sprinkle this in for a salty, sharp finish that helps get that perfect golden-brown crust on top.
- 8 Med Potatoes (Yukon Gold or Russet): I peel these and slice them super thin. I personally love Yukon Golds because they hold their shape and stay buttery, but Russets work great if you want a softer, fluffier texture.
WHY I LOVE THIS RECIPE?
- The Perfect Texture: By slicing the potatoes thin and standing them up, you get those amazing crispy tops while the bottoms stay soft and creamy in the sauce.
- The Three-Cheese Blend: I use a mix of Gruyere, Cheddar, and Parmesan, which creates a deep, savory flavor that you just can’t get with only one type of cheese.
- Total Comfort Food: It’s incredibly rich and cozy, making it the perfect “hug in a pan” for cold winter nights or big family holiday gatherings.
HOW DO YOU PREPARE HASSELBACK POTATOES AU GRATIN?
Time needed: 1 hour and 30 minutes
- Prep the Oven and Pan:
Prep the Oven and Pan: Preheat your oven to 400°F. Lightly grease a shallow oval casserole dish with butter or non-stick spray. - Sauté the Aromatics:
In a medium saucepan, melt the 2 tablespoons of butter over medium heat. Add the minced onion and cook until softened (about 3–4 minutes). Stir in the minced garlic and dried thyme, cooking for just one more minute until it smells amazing.
- Make the Cream Base:
Pour the 2 cups of heavy cream and black pepper into the saucepan. Bring the mixture to a very gentle simmer—don’t let it boil over! Once simmering, remove the pan from the heat.
Stir in half of the Gruyere, Cheddar, and Parmesan cheeses into the warm cream. Whisk until the cheese is melted and the sauce is smooth. - Toss the Potatoes:
Place your thinly sliced potatoes into a very large mixing bowl. Pour that warm, velvety cheese sauce over the potatoes and toss them gently with your hands or a large spoon until every single slice is fully coated. - Assemble the Hasselback Rows:
Grab a stack of the coated potato slices and arrange them in the casserole dish. Stand them up on their edges (rather than laying them flat) to create that classic “Hasselback” look. Continue until the dish is packed tight. - Final Sauce Pour, Cover, and Bake:
If there is any leftover cheese sauce in the mixing bowl, pour it evenly over the top of the arranged potatoes. Cover the baking dish with aluminium foil and bake for 30 minutes. - Remove the Foil:
Remove the foil and continue baking for another 30 minutes. - Top with Remaining Cheese:
Sprinkle the remaining half of the three cheeses over the top. Bake for an additional 20 minutes. You’ll know it’s ready when the potatoes are fork-tender and the cheese on top is bubbly and golden-brown. - Rest:
Let the dish sit for about 10 minutes before serving. This allows the sauce to thicken up so it clings to the potatoes perfectly.
FAQ – FREQUENTLY ASKED QUESTIONS
I always reach for Yukon Golds because they stay buttery and hold their shape, but Russets are a classic choice if you want that extra starchy, fluffy texture.
Aim for about 1/8 to 1/4 inch. A mandoline slicer is my favorite “secret weapon” here to keep them uniform so they all cook at the same rate.
It’s the only way to make sure that creamy cheese sauce gets into every single nook and cranny. If you just pour it over the top, the middle layers might stay dry!
Nope! Sometimes high heat causes the fat to separate a bit. Just give it a quick stir before serving; it will still taste incredible.
If you’re in a pinch, you can microwave your potato slices for about 5 minutes before tossing them in the sauce. This gives them a “head start” so they soften faster in the oven.
Easy Au Gratin Potatoes Substitutions and Variations
I love how flexible this recipe is! Here are a few ways I like to switch up these easy au gratin potatoes depending on what’s in my fridge:
- Swap the Cheese: If you aren’t a fan of Gruyere, try using a sharp white cheddar or even pepper jack for a spicy cheesy scalloped potatoes twist.
- Add some Greens: Sometimes I tuck a little baby spinach or sautéed leeks between the potato layers to add some color and nutrition to this gourmet potato side dish.
- Herb it Up: Instead of dried thyme, try using fresh rosemary or chives to give your creamy potato bake a bright, earthy finish.
- Make it Hearty: For a full meal, you can add diced ham or crispy bacon bits between the slices to turn this side into a main dish potato bake.
Cooking Tips for Recipe Success
To make sure you get the best creamy potato recipes every single time, I have three little secrets for you:
- Slice ’em Thin: Use a mandoline to get those paper-thin, uniform slices; this is the key to making sure your crispy Hasselback potatoes cook evenly and don’t have crunchy raw centers.
- The Warm Cream Trick: Always heat your cream with the aromatics before pouring it over the potatoes so the cheese melts instantly and creates a velvety smooth sauce.
- Let it Rest: I know it’s hard to wait, but letting the dish sit for 10 minutes after baking helps the sauce thicken up so it clings to every Yukon Gold potato slice.
What is Commonly Served with Creamy Potato Bake?
For a Christmas dinner or Thanksgiving feast, I love serving these potatoes with herb-crusted prime rib or honey-glazed ham. They also pair perfectly with roasted chicken and a crisp salad for a casual weeknight meal. A bold red wine or sparkling cider balances the rich cheese, making any occasion—from Easter brunch to Sunday night—feel like a gourmet spread!
How to Store Leftover Gourmet Potato Side Dish for Later?
If you happen to have leftovers, just put them in an airtight container and keep them in the fridge for up to four days. I actually think the cheesy flavors get even better the next day as they have more time to meld together! When you’re ready to eat, I recommend reheating them in the oven at 350°F to keep those Hasselback edges nice and crispy.
Can Crispy Hasselback Potatoes be Frozen?
You can definitely freeze these, though the texture of the cream sauce might change slightly once it thaws. I suggest freezing the baked casserole in individual portions wrapped tightly in foil for up to two months. It’s one of my favorite make-ahead holiday sides because you can just pop a portion in the oven for a quick, decadent treat whenever you need it!
LOOKING FOR MORE DELICIOUS SIDE DISHES? TRY THESE!
The Best Green Bean Casserole Recipe (no canned soup)
Savory Roasted Butternut Squash Casserole
Simple Creamy Garlic Mashed Potatoes
FINAL THOUGHTS
I am so excited for you to try these Hasselback Potatoes Au Gratin at your next family gathering! They truly are the most requested holiday side dish in my house, and I know they’ll be a hit in yours too. If you try the recipe, please leave me a comment and let me know how it turned out! I can’t wait to hear how much your guests loved those crispy, cheesy layers.
Hasselback Potatoes Au Gratin
Equipment
- Large Baking Dish
Ingredients
- 8 Yukon Gold potatoes (peeled and sliced thin)
- 3 tablespoons butter
- 1 onion (Minced)
- 3 Cloves Garlic (Minced)
- 1 teaspoon Dried Thyme
- 2 cups Heavy Cream
- ¼ teaspoon Black Pepper
- 1 cup Gruyere Cheese (shredded)
- 1 cup Cheddar Cheese (shredded)
- ½ cup Parmesan Cheese (shredded)
Instructions
- Prep the Oven and Pan: Preheat your oven to 400°F. Lightly grease a shallow 9×13-inch casserole dish with butter or non-stick spray.
- Sauté the Aromatics: In a medium saucepan, melt the 2 tablespoons of butter over medium heat. Add the minced onion and cook until softened (about 3–4 minutes). Stir in the minced garlic and dried thyme, cooking for just one more minute until it smells amazing.
- Make the Cream Base: Pour the 2 cups of heavy cream and black pepper into the saucepan. Bring the mixture to a very gentle simmer—don’t let it boil over! Once simmering, remove the pan from the heat.
- The Cheese Sauce: Stir in half of the Gruyere, Cheddar, and Parmesan cheeses into the warm cream. Whisk until the cheese is melted and the sauce is smooth.
- Toss the Potatoes: Place your thinly sliced potatoes into a very large mixing bowl. Pour that warm, velvety cheese sauce over the potatoes and toss them gently with your hands or a large spoon until every single slice is fully coated.
- Assemble the Hasselback Rows: Grab a stack of the coated potato slices and arrange them in the casserole dish. Stand them up on their edges (rather than laying them flat) to create that classic “Hasselback” look. Continue until the dish is packed tight.
- Final Sauce Pour, Cover, and Bake: If there is any leftover cheese sauce in the mixing bowl, pour it evenly over the top of the arranged potatoes. Cover the baking dish with aluminium foil and bake for 30 minutes.
- Remove the Foil: Remove the foil and continue baking for another 30 minutes.
- Top with Remaining Cheese: Sprinkle the remaining half of the three cheeses over the top. Bake for an additional 20 minutes. You’ll know it’s ready when the potatoes are fork-tender and the cheese on top is bubbly and golden-brown.
- Rest: Let the dish sit for about 10 minutes before serving. This allows the sauce to thicken up so it clings to the potatoes perfectly.
