Indulge in the ultimate comfort food with this creamy potato gratin recipe, a luxurious side dish that transforms simple potatoes into a golden, cheesy masterpiece. Perfect for holidays or family gatherings, this gratin au dauphin features tender potato slices layered in a rich garlic-thyme cream sauce, topped with bubbling cheese for an irresistible crispy edge. Once you try this easy potato gratin, it will become your go-to for impressive yet effortless entertaining—keep reading for the full step-by-step guide to potato gratin perfection.
Ingredients for Creamy Potato Gratin
- 1.5 kg (3.3 lbs) Yukon Gold or russet potatoes, peeled and thinly sliced (about 1/8 inch or 3 mm thick)
- 2 medium garlic cloves, minced
- 85 g (3 oz) finely grated Gruyère cheese
- 60 g (2 oz) finely grated Parmigiano-Reggiano cheese
- 2 teaspoons fresh thyme leaves (or 1 teaspoon dried thyme)
- 460 ml (2 cups) whipping cream (heavy cream)
- 2 tablespoons unsalted butter, softened
- Salt and freshly ground black pepper, to taste
Step-by-Step Instructions for Making Potato Gratin
- Preheat your oven to 200°C (400°F). Grease a 2-3 liter (2-3 quart) casserole dish evenly with the 2 tablespoons of softened unsalted butter.
- In a large bowl, combine the 85 g (3 oz) grated Gruyère cheese and 60 g (2 oz) grated Parmigiano-Reggiano cheese. Mix well.
- Add the minced garlic cloves to 2/3 of the cheese mixture and stir to combine. Set aside the remaining 1/3 of the cheese mixture for topping.
- Stir in the 2 teaspoons fresh thyme leaves into the garlic-cheese mixture.
- Pour in the 460 ml (2 cups) whipping cream. Season generously with salt and freshly ground black pepper, then whisk until fully incorporated.
- Add the thinly sliced 1.5 kg (3.3 lbs) potatoes to the cream mixture. Toss thoroughly with your hands, ensuring every slice is coated and separating any slices that stick together to allow the cream to get between them.
- Pick up small handfuls of the coated potatoes, organizing them into neat stacks, and arrange them tightly in the prepared casserole dish. Continue until all potatoes are added, packing them very tightly for even layering.
- Cover the dish tightly with aluminum foil and bake in the preheated oven for 45 minutes.
- Remove the foil, sprinkle the reserved 1/3 cheese mixture evenly over the top, and return to the oven. Bake uncovered until the top is golden brown and crispy, about 45 minutes longer.
- Remove from the oven and let the potato gratin rest for 10-15 minutes before serving to allow the layers to set.
Prep Time, Cook Time, Servings, and Nutrition
- Prep Time: 20 minutes
- Cook Time: 1 hour 30 minutes
- Total Time: 1 hour 50 minutes
- Servings: 6-8 as a side dish
Nutrition per serving (based on 8 servings): Approximately 420 calories, 28g fat, 32g carbohydrates, 12g protein, 3g fiber.
Why This Creamy Potato Gratin is a Healthy and Delicious Choice
This potato gratin recipe shines with its use of wholesome potatoes packed with potassium and vitamin C, while the creamy sauce provides calcium from real cheeses. It’s a satisfying, vegetable-forward dish that’s naturally gluten-free and offers comforting indulgence without excess—ideal for balanced holiday meals that everyone loves.
Potato Gratin
Indulge in the ultimate comfort food with this creamy potato gratin, featuring tender potato slices layered in a rich garlic-thyme cream sauce, topped with bubbling cheese for an irresistible crispy edge.
For the Potato Gratin
- 1.5 kg 1.5 kg (3.3 lbs) Yukon Gold or russet potatoes, peeled and thinly sliced (About 1/8 inch or 3 mm thick)
- 2 2 medium garlic cloves, minced
- 85 g 85 g (3 oz) finely grated Gruyère cheese
- 60 g 60 g (2 oz) finely grated Parmigiano-Reggiano cheese
- 2 teaspoons 2 teaspoons fresh thyme leaves (or 1 teaspoon dried thyme)
- 460 ml 460 ml (2 cups) whipping cream (heavy cream)
- 2 tablespoons 2 tablespoons unsalted butter, softened (For greasing the casserole dish)
- Salt and freshly ground black pepper, to taste
Preparation
- Preheat your oven to 200°C (400°F). Grease a 2-3 liter (2-3 quart) casserole dish evenly with the 2 tablespoons of softened unsalted butter.
- In a large bowl, combine the 85 g (3 oz) grated Gruyère cheese and 60 g (2 oz) grated Parmigiano-Reggiano cheese. Mix well.
- Add the minced garlic cloves to 2/3 of the cheese mixture and stir to combine. Set aside the remaining 1/3 of the cheese mixture for topping.
- Stir in the 2 teaspoons fresh thyme leaves into the garlic-cheese mixture.
- Pour in the 460 ml (2 cups) whipping cream. Season generously with salt and freshly ground black pepper, then whisk until fully incorporated.
- Add the thinly sliced 1.5 kg (3.3 lbs) potatoes to the cream mixture. Toss thoroughly with your hands, ensuring every slice is coated and separating any slices that stick together to allow the cream to get between them.
- Pick up small handfuls of the coated potatoes, organizing them into neat stacks, and arrange them tightly in the prepared casserole dish. Continue until all potatoes are added, packing them very tightly for even layering.
Baking
- Cover the dish tightly with aluminum foil and bake in the preheated oven for 45 minutes.
- Remove the foil, sprinkle the reserved 1/3 cheese mixture evenly over the top, and return to the oven. Bake uncovered until the top is golden brown and crispy, about 45 minutes longer.
- Remove from the oven and let the potato gratin rest for 10-15 minutes before serving to allow the layers to set.
This potato gratin recipe shines with wholesome potatoes packed with potassium and vitamin C, while the creamy sauce provides calcium from real cheeses. It’s a satisfying, vegetable-forward dish that’s naturally gluten-free and ideal for balanced holiday meals.
