Cheesy Au Gratin Potatoes

Section: Perfect Side Dishes to Complete Any Meal

Thinly sliced Yukon gold potatoes are smothered in a velvety sauce made from sharp cheddar, white cheddar, roasted garlic, and fresh herbs. Smoky bacon is layered in for crunch and deep, savory flavor, then the whole dish is baked twice—first to infuse the potatoes with cheesy creaminess, and again to brown the top with extra cheese and crispy bacon. A final broil and parsley garnish create a crispy golden finish. Each bite delivers comfort, richness, and a fragrant hint of thyme and rosemary, making it a perennial favorite at gatherings and weeknight tables alike.

A man wearing a chef's hat and apron.
Brought to You By Ryan
Last modified on Sun, 24 Aug 2025 22:13:11 GMT
A close up of a delicious cheesy au gratin potatoes dish. Bookmark
A close up of a delicious cheesy au gratin potatoes dish. | palatablelife.com

Cheesy au gratin potatoes are a classic side dish that transforms humble potatoes into rich comfort food with melted cheese layers roasted garlic and crispy bacon. I rely on this recipe when I want to make any family meal feel special or need the kind of dish people always ask the recipe for.

The first time I made these was to impress my in-laws at Thanksgiving and now I get requests for them at every single holiday and birthday get-together.

Ingredients

  • Yukon gold potatoes: for their buttery flavor and creamy texture best when sliced evenly for consistent cooking
  • Sharp cheddar cheese: for bold cheesy taste look for blocks to shred yourself for top melting quality
  • Sharp white cheddar cheese: gives a distinct tang and melts smoothly
  • Bacon: brings smoky crunch use thick-cut for extra flavor
  • Roasted garlic: infuses the entire dish with sweetness and depth
  • Unsalted butter: makes the sauce rich and allows control over salt content
  • All-purpose flour: thickens the cheese sauce to the right consistency
  • Whole milk: delivers creaminess without being overly heavy
  • Chicken broth: adds savory undertones choose low sodium for better balance
  • Sweet paprika: offers a gentle warmth and color opt for fresh spices for boldest flavor
  • Fresh thyme and rosemary: elevate the dish with herbal notes snip from the garden if possible
  • Salt: heightens all the flavors
  • Parsley: for garnish brightens and freshens the finished dish

Instructions

Prepare The Roasted Garlic:
Roast two bulbs of garlic by slicing the tops off enough to expose each clove drizzling with olive oil wrapping in foil and baking at four hundred degrees Fahrenheit for about thirty to thirty five minutes until softened and fragrant
Blanch The Potatoes:
While garlic is roasting peel and slice yukon gold potatoes into even thin rounds Bring a large pot of water to a rolling boil and add sliced potatoes Cook gently for eight minutes Drain and immediately plunge into a bowl of ice water to stop further cooking and set aside
Cook The Bacon:
Cut bacon strips into small pieces and fry in a large skillet over medium heat until crispy Transfer cooked bacon to a paper towel-lined plate and reserve pan with bacon fat for the next step
Make The Roux And Start The Cheese Sauce:
Add unsalted butter to the skillet with any bacon drippings Heat until fully melted on medium low then sprinkle in the flour and whisk consistently for one to two minutes until the mixture turns a pale gold This forms the roux base that keeps the cheese sauce creamy and smooth
Finish The Cheese Sauce:
Slowly whisk in whole milk and chicken broth stirring constantly to prevent lumps Continue cooking until the sauce gently bubbles and thickens Add roasted garlic salt black pepper paprika thyme and rosemary Use a potato masher if needed to fully incorporate the garlic for even flavor Stir in the shredded sharp cheddar and white cheddar a little at a time allowing each addition to melt fully before adding more
Layer Potatoes And Cheese Sauce:
Preheat oven to three hundred fifty degrees Fahrenheit Arrange blanched potato slices in a greased baking dish Pour the cheese sauce evenly over the top gently nudging potatoes to ensure all the slices are coated
Bake And Add Toppings:
Place baking dish in the oven uncovered and cook for thirty minutes Remove from oven sprinkle extra cheese and all the crispy bacon across the top Bake another ten to fifteen minutes until potatoes are perfectly tender and the surface is golden and bubbling For an extra charred finish switch on your broiler for one to two minutes
Rest And Serve:
Let the baked potatoes sit for about five minutes before serving This allows the sauce to settle and makes it easier to cut neatly Finish with a scatter of chopped parsley for color
A dish of cheesy au gratin potatoes.
A dish of cheesy au gratin potatoes. | palatablelife.com

Roasted garlic always stands out in this dish I love squeezing it from the skins and watching the cloves melt straight into the sauce One Thanksgiving my nephew called them magic potatoes and now the name has stuck in our house

Storage Tips

Store leftovers in a sealed container in the refrigerator for up to three days The potatoes can be reheated gently in the oven or microwave Just add a splash of milk before reheating to keep things creamy

Ingredient Substitutions

If you need a vegetarian version simply skip the bacon and use an extra two tablespoons of butter in its place Swap out the cheese for any combo of melting cheeses you love or happen to have on hand Gruyere or fontina work beautifully

Serving Suggestions

These potatoes make a showstopping side with roasted meats grilled chicken or even as a holiday centerpiece Add a bright green salad or crisp veggies for contrast

A Little History

Traditional au gratin potatoes have roots in French home cooking but this version is pure American comfort food The blend of cheddar roasted garlic and bacon guarantees you get a dish people will pile onto their plates

Success Stories

When I serve these at family reunions there are never leftovers and everyone from toddlers to grandparents heads back for seconds After making them together once my sister put her own twist on the recipe with smoked gouda and she swears it is now her most requested dish too

Freezer Meal Conversion

After assembling the potatoes and sauce in your baking dish cover tightly with foil and freeze before baking When ready to serve thaw overnight in the refrigerator and bake uncovered at three hundred fifty degrees Fahrenheit as directed It is perfect for prepping before a busy holiday week

A dish of cheesy au gratin potatoes.
A dish of cheesy au gratin potatoes. | palatablelife.com

Au gratin potatoes really are the dish that bring people together around the table and every batch teaches me a new little trick for making them even better next time

Your Recipe Questions Answered

→ How do you achieve even, tender potato slices?

Thinly and evenly slice Yukon gold potatoes, then blanch before layering to ensure perfect tenderness during baking.

→ Can you omit bacon for a vegetarian dish?

Yes, simply skip the bacon and replace the fat with extra unsalted butter for richness and creamy texture.

→ Is roasting the garlic essential?

Roasting garlic brings a mellow sweetness and depth of flavor, enhancing the dish without overpowering other ingredients.

→ What cheeses melt best here?

Sharp cheddar and white cheddar combine for a tangy taste and ideal melting quality. Gruyere and fontina also work well.

→ How can you get a crispy, golden topping?

Broil briefly after a final sprinkle of cheese and bacon to achieve a bubbling, browned surface.

→ Can you prepare this ahead of time?

Yes, assemble in advance, refrigerate, then bake just before serving for fresh flavor and perfect texture.

Cheesy Au Gratin Potatoes

Thin-sliced potatoes with cheddar and bacon, layered in creamy sauce and baked golden with fresh herbs.

Prep Time
40 minutes
Cook Time
60 minutes
Total Time
100 minutes
Brought to You By: Ryan

Recipe Category: Side Dishes

Skill Level: Requires Some Experience

Culinary Inspiration: American

Yields: 10 Portion Size (One 9x13 inch pan (serves 8 to 10))

Dietary Preferences: ~

What You’ll Need

→ Cheese Sauce and Layering

01 3 pounds Yukon gold potatoes, peeled and cut into 1/8 inch thick rounds
02 2 cups sharp cheddar cheese, freshly shredded
03 1 cup sharp white cheddar cheese, freshly shredded
04 4 tablespoons unsalted butter
05 1/4 cup all-purpose flour
06 1 1/2 cups whole milk
07 1 cup low sodium chicken broth
08 1/2 teaspoon sweet paprika
09 2 teaspoons fresh thyme leaves, minced
10 1 teaspoon fresh rosemary, finely chopped
11 1 teaspoon kosher salt, plus more to taste
12 1/2 teaspoon freshly ground black pepper

→ Toppings and Add-Ins

13 6 slices thick-cut bacon, diced
14 2 bulbs roasted garlic
15 2 tablespoons flat-leaf parsley, chopped (for garnish)
16 1 tablespoon olive oil (for roasting garlic)

Step-by-Step Guide

Step 01

Preheat oven to 400°F. Slice the tops off two garlic bulbs to expose cloves, drizzle with olive oil, wrap in foil, and roast for 30 to 35 minutes until soft and fragrant. Set aside to cool.

Step 02

Peel and slice Yukon gold potatoes into uniform 1/8 inch rounds. Bring a large pot of water to a boil, add the potatoes, cook for 8 minutes, then drain and immediately submerge in ice water to halt cooking. Drain again and set aside.

Step 03

Slice bacon into small pieces. Cook in a large skillet over medium heat until crispy. Transfer bacon to a paper towel-lined plate. Reserve bacon fat in the skillet.

Step 04

Add unsalted butter to the skillet with reserved bacon drippings over medium-low heat. Once butter melts, whisk in flour and cook for 1 to 2 minutes until pale golden, forming a smooth roux.

Step 05

Gradually whisk in whole milk and chicken broth, stirring constantly to avoid lumps. Cook until sauce thickens slightly and begins bubbling. Squeeze roasted garlic from cloves, then add to sauce along with salt, black pepper, paprika, thyme, and rosemary. Mash garlic to incorporate. Slowly add in sharp cheddar and white cheddar, mixing until fully melted and sauce is velvety.

Step 06

Preheat oven to 350°F. Grease a 9x13 inch baking dish. Layer blanched potato slices evenly in the dish. Pour the cheese sauce over potatoes, ensuring all slices are fully coated by nudging the sauce between the layers.

Step 07

Place dish uncovered in oven and bake for 30 minutes. Remove from oven, sprinkle with remaining cheddar and crispy bacon. Return to oven and bake an additional 10 to 15 minutes until the surface is golden and bubbly.

Step 08

For extra color, place under broiler for 1 to 2 minutes until the topping is crisp and lightly browned. Watch closely to prevent burning. Remove and let rest for 5 minutes.

Step 09

Scatter with chopped parsley before serving. Slice and serve warm for optimal texture and flavor.

Handy Tips

  1. Blanching the potatoes before baking ensures even cooking and helps the slices keep their shape during baking.
  2. Roasted garlic greatly enriches the flavor without overpowering the cheese sauce—do not skip this step for best results.
  3. For a vegetarian adaptation, omit bacon and add two extra tablespoons of butter to the sauce.
  4. Prepare in advance by assembling the dish up to the final bake and refrigerating; bake when ready to serve.

Must-Have Tools

  • Large skillet
  • Large pot
  • 9x13 inch baking dish
  • Aluminum foil
  • Whisk
  • Sharp knife or mandoline
  • Cutting board
  • Paper towels

Potential Allergens

Always review ingredient labels for allergens, and consult a professional if needed.
  • Contains milk, cheese, and butter (dairy).
  • Contains wheat (all-purpose flour).

Nutritional Details (Per Portion)

Nutritional information is provided for reference and shouldn’t replace expert guidance.
  • Calories: 390
  • Fats: 22 grams
  • Carbohydrates: 37 grams
  • Proteins: 13 grams