Irresistible Creamy Au Gratin Potatoes Recipe

Ingredients

• 4 medium russet potatoes, thinly sliced
• 1 medium onion, sliced into rings
• salt and ground black pepper to taste
• 3 tablespoons butter
• 3 tablespoons all-purpose flour
• 0.5 teaspoon salt
• 2 cups milk
• 1.5 cups shredded Cheddar cheese

Instructions

1. Preheat your oven to 400°F (200°C) and grease a 2-quart casserole dish with butter. Gather all your ingredients for easy preparation.
2. Arrange half of the potato slices in the greased casserole dish, creating an even layer. Season generously with salt and pepper to enhance the flavor.
3. Layer the onion slices evenly over the potatoes, then cover with the remaining potato slices. Season again with salt and pepper.
4. In a medium saucepan, melt the butter over medium heat. Whisk in the flour and salt, cooking continuously until the raw flour taste disappears, about 1 minute.
5. Slowly add the milk, about 1/4 cup at a time, whisking thoroughly after each addition to ensure a smooth sauce. This method prevents lumps from forming.
6. Continue cooking and whisking constantly until the sauce thickens, approximately 3 to 5 minutes, achieving a velvety consistency.
7. Remove from heat and stir in all the cheese at once. Cook, stirring constantly, until the cheese is completely melted and the sauce is smooth, about 30 to 60 seconds.
8. Pour the luscious cheese sauce evenly over the layered potatoes in the casserole dish. Cover the dish tightly with aluminum foil to trap moisture.
9. Bake in the preheated oven until the potatoes are fork-tender and the sauce is bubbly, approximately 1 ½ hours. Let stand for a few minutes before serving.

Nutrition

• Calories: 499 kcal
• Fat Content: 25 g
• Fiber Content: 4 g
• Sugar Content: 9 g
• Sodium Content: 683 mg
• Protein Content: 20 g
• Cholesterol Content: 77 mg
• Carbohydrate Content: 49 g
• Saturated Fat Content: 16 g
• Unsaturated Fat Content: 0 g