Description
This Potatoes Au Gratin recipe is a classic and comforting side dish that’s perfect for any special occasion or holiday meal. Thinly sliced potatoes are layered with a creamy cheese sauce and baked to golden perfection, making for a truly decadent and satisfying dish.
Ingredients
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- 1/4 cup unsalted butter
- 1 medium onion, chopped
- 3 cloves garlic, minced
- 1/4 cup all-purpose flour
- 1 cup low-sodium or no-sodium chicken broth
- 2 cups whole milk (or half and half)
- 1/2 teaspoon salt, or to taste
- 1/2 teaspoon black pepper, or to taste
- 1 tablespoon fresh thyme, chopped, for garnish
- 3 pounds Yukon Gold potatoes, sliced into 1/8-inch rounds
- 2 cups freshly grated white cheddar cheese
- 1/2 cup freshly grated Parmesan cheese
Instructions
- Preheat and Prep: Preheat oven to 350°F (175°C). Lightly grease a 9×13 inch casserole dish with cooking spray.
- Sauté Vegetables: Melt butter in a skillet over medium-low heat. Add onion and garlic, and cook until softened. Sprinkle with flour and cook for 2 minutes more, stirring constantly.
- Make Sauce: Gradually whisk in chicken broth and milk until smooth. Bring to a boil over medium heat, whisking constantly. Season with salt and pepper.
- Layer Ingredients: In the prepared casserole dish, layer ⅓ of the potatoes, ⅓ of the sauce, and ½ cup cheddar cheese. Repeat layers twice, ending with Parmesan cheese on top.
- Bake: Cover the dish with aluminum foil and bake for 45 minutes. Uncover and bake for another 45 minutes, or until golden brown and potatoes are tender. Broil for a few minutes if needed for extra browning.
- Serve: Garnish with fresh thyme and serve hot.
Notes
- Potatoes: Use Yukon Gold or red potatoes for best results.
- Make Ahead: Assemble the dish ahead of time and refrigerate overnight.
- Cheese: Grate cheese from a block for optimal melting and flavor.
- Layering: Layer the ingredients for even cooking and a creamy texture.
- Storage: Refrigerate leftovers for up to 4 days or freeze for up to 2 weeks.
Nutrition
- Serving Size: 1 Serving
- Calories: 400kcal
- Sugar: 5g
- Sodium: 500mg
- Fat: 25g
- Saturated Fat: 14g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 3g
- Protein: 15g
- Cholesterol: 60mg
