5.0 from 600 votes
Au Gratin Potatoes Recipe
Easy Au Gratin Potatoes, or Gratin Dauphinois, is a comforting side dish made with thinly sliced potatoes tossed in a rich and velvety cheese sauce, then baked until golden. Every bite is delicious!
Prep Time
20 mins
Cook Time
1 hr 20 mins
Total Time
1 hr 50 mins
Servings: 12 servings
Calories: 285 kcal
Course:
Side Dish , Dinner
Cuisine:
American
Ingredients
- 5 Tbsp unsalted butter divided
- ¼ cup all-purpose flour
- 2 ½ cups milk any kind
- 1/2 cup heavy whipping cream
- 1 ¼ tsp fine sea salt or to taste
- ¼ tsp freshly ground black pepper
- 1 tsp onion powder
- ½ tsp garlic powder
- 2 cups grated gruyere cheese from a 6 oz block or cheddar cheese, divided
- 3 lbs Yukon gold potatoes scrubbed (peeled or unpeeled)
- chives to garnish, optional
Instructions
- Preheat oven to 350 ̊F. Use 1 Tbsp butter to grease a 3 quart (9x13) casserole dish.
- In a large pot or dutch oven over medium heat, melt 4 Tbsp butter. Add flour whisk for 2 minutes to cook off the flour taste. Gradually pour in the milk then the cream while whisking. Add salt, pepper, onion powder and garlic powder then continue whisking until sauce has thickened. Add more seasonings to taste. Remove from heat and stir in half of the shredded cheese until melted.
- Peel potatoes if desired and thinly slice to 1/8” thick (a food processor makes this quick and easy). Add potatoes to the cheese sauce and stir to coat then spread the potatoes evenly in the prepared baking dish and top with the remaining grated cheese.
- Cover with aluminum foil and bake for 60 minutes. Remove foil and bake another 15-30 minutes or until top is golden brown and potatoes are tender and can be easily pierced with a fork. You can broil for 1-2 minutes at the end if more browning is desired but keep an eye on it so it doesn’t burn. Rest for 15 minutes before serving. Garnish with chives and freshly cracked black pepper if desired.
Cup of Yum
Nutrition Information
Calories
285kcal
(14%)
Carbs
25g
Protein
11g
(22%)
Fat
16g
(25%)
Saturated Fat
10g
(50%)
Polyunsaturated Fat
1g
Monounsaturated Fat
4g
Trans Fat
0.2g
Cholesterol
50mg
(17%)
Sodium
429mg
(18%)
Potassium
591mg
(17%)
Fiber
3g
(12%)
Sugar
4g
(8%)
Vitamin A
599IU
(12%)
Vitamin C
22mg
(24%)
Calcium
307mg
(31%)
Iron
1mg
(6%)
Nutrition Facts
Serving: 12servings
Amount Per Serving
Calories 285
% Daily Value*
| Calories | 285kcal | 14% |
| Carbs | 25g | |
| Protein | 11g | 22% |
| Fat | 16g | 25% |
| Saturated Fat | 10g | 50% |
| Polyunsaturated Fat | 1g | 6% |
| Monounsaturated Fat | 4g | 20% |
| Trans Fat | 0.2g | 10% |
| Cholesterol | 50mg | 17% |
| Sodium | 429mg | 18% |
| Potassium | 591mg | 13% |
| Fiber | 3g | 12% |
| Sugar | 4g | 8% |
| Vitamin A | 599IU | 12% |
| Vitamin C | 22mg | 24% |
| Calcium | 307mg | 31% |
| Iron | 1mg | 6% |
* Percent Daily Values are based on a 2,000 calorie diet.