Scalloped Potatoes
Scalloped potatoes are a wonderful casserole made with layers of thinly sliced potatoes and onions in a creamy green onion sauce topped with fresh thyme and baked until golden.
Prep Time20 minutes mins
Cook Time1 hour hr 25 minutes mins
Total Time1 hour hr 45 minutes mins
Course: Side Dish
Cuisine: American
Servings: 6
- 3 pounds russet potatoes sliced to 1/8-inch thick
- 1 large onion thinly sliced
- 5 large green onions chopped
- salt and pepper to taste
For the cream sauce
- 4 tablespoons butter
- 3 cloves garlic minced
- 1/4 cup flour
- 3 cups whole milk
- 1 1/2 teaspoons kosher salt
- 1/2 teaspoon black pepper
- 2 teaspoons fresh thyme leaves only
Preheat oven to 350f and set the rack to the middle level.
Heat a saucepan to medium-low heat with the butter and garlic and cook until fragrant (about 1-2 minutes).
Add the flour and cook for 1-2 minutes or until all of the white flour turns golden.
Add the milk into the pot slowly while whisking to combine. Add the green onions and turn the heat to medium-high and bring to a simmer while whisking. Once the sauce simmers and thickens, remove the saucepan from the heat and season with salt and pepper to taste.
Grease a 9x13" baking dish with butter then place 1/3 of the potatoes into the dish. Layer 1/3 of the sliced onion. Season each layer with salt, pepper, and thyme. Pour 1/3 of the cream sauce on top and repeat for the next two layers.
Cover tightly with foil and bake for 50 minutes. Remove the foil and continue to bake until the potatoes are tender (~30 minutes). For added color, broil the top for around 2-3 minutes but watch carefully.
Allow the scalloped potatoes to rest for at least 15 minutes to set before serving. Enjoy!
- Scalloped potatoes traditionally are not made with cheese, but feel free to add cheddar, parmesan, or any cheese you like to the cream sauce.
- Using a mandoline is recommended for both the potatoes and onion (cut to about 1/8" of thickness and the onions to 1/16" thickness).
- Leftovers can be saved in the fridge for up to 3 days and can be reheated in either the microwave or oven.
Calories: 316kcal | Carbohydrates: 46.9g | Protein: 8g | Fat: 11.3g | Saturated Fat: 6.8g | Cholesterol: 31mg | Sodium: 595mg | Potassium: 1118mg | Fiber: 6.2g | Sugar: 9.2g | Calcium: 145mg | Iron: 2mg