Servings6 servings
Calories344kcal
AuthorBeth Pierce
Ingredients
- 4 tablespoons butter
- 4 tablespoons flour
- 1 medium onion chopped
- 3-4 cloves garlic minced
- 3 cups whole milk
- 1 tablespoon chopped fresh thyme
- 1 tablespoon chopped fresh parsley
- ⅛ teaspoon cayenne pepper
- Kosher salt and fresh ground black pepper to taste
- 3 lbs Yukon Gold Potatoes thinly sliced
Instructions
- Preheat oven to 350 degrees. Grease a 9×9 inch or not-deep 2-quart casserole dish.
- Melt the butter in a skillet over medium heat. Add the onion and cook until soft. Then reduce the heat and add the garlic, cooking for 1 minute while stirring constantly.
- Whisk in the flour and cook for 2 minutes. Slowly add the milk whisking to combine. Cook over low heat until thickened, whisking frequently. Do not let it boil.
- Whisk in about 2/3 of the thyme and parsley and all of the cayenne pepper. Season with kosher salt and fresh ground black pepper to taste.
- Layer 1/4 of the sliced potatoes in the bottom of a greased casserole dish. Pour 1/4 of the sauce over the top of the potatoes and spread it out with a spoon or spatula. Repeat the layers 3 more times ending with the cream sauce. Top with the remaining fresh herbs.
- Cover the casserole with aluminum foil and bake for 45 minutes. Remove the foil and bake uncovered for 30-45 minutes or until the potatoes are tender and the casserole is bubbly on the edges. Turn the broiler on the last 1-2 minutes of cooking to brown the top. Sprinkle with fresh herbs.
Notes
- Yukon gold or Russet Potatoes work well with this recipe.
- Slice the potatoes between 1/8-1/4 inch thick. A mandoline works really well for this recipe.
- For optimal flavor, use fresh herbs. But dried herbs can be used in a pinch.
- If you like a lot of seasoning, add fresh herbs, salt, and black pepper to each layer. Or go hog wild and add some Cajun or Creole seasoning.
- To make these into au gratin potatoes, whisk in about 2 cups of good quality shredded cheddar to the sauce at the very end over very low heat. As soon as it melts, proceed with the recipe as written.
- Keep an eye on the potatoes when under the broiler. Broilers can be so unpredictable, especially in older ovens. I always set a 1-2 minute timer, so I do not get distracted.
- Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or the oven.
Nutrition
Calories: 344kcal | Carbohydrates: 52g | Protein: 10g | Fat: 12g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.3g | Cholesterol: 35mg | Sodium: 122mg | Potassium: 1190mg | Fiber: 6g | Sugar: 8g | Vitamin A: 565IU | Vitamin C: 49mg | Calcium: 193mg | Iron: 2mg
