Rich Potato Gratin Recipe
This Rich Potato Gratin recipe is a classic French-inspired dish featuring thinly sliced potatoes layered in a creamy, cheesy sauce enhanced with thyme and garlic. Baked until golden and bubbly, it makes a comforting and elegant side dish perfect for family dinners or special occasions.
- Prep Time: 20 minutes
- Cook Time: 45 minutes covered + 20 minutes uncovered
- Total Time: 1 hour 25 minutes
- Yield: 4 servings
- Category: Side Dish
- Method: Baking
- Cuisine: French
Ingredients
Base Sauce
- 3 tbsp butter
- 1 small onion, minced
- 1 garlic clove, grated
- 1 tsp fresh thyme, chopped or 1/2 tsp dried thyme
- 3 tbsp flour (use gluten-free if desired)
- 1 1/2 cups milk or substitute heavy cream
- 1/2 cup shredded Gruyere cheese
- 1 pinch ground nutmeg (optional)
- Salt and black pepper, to taste
Potatoes and Topping
- 4 lb potatoes, sliced thin
- 1 cup shredded Gruyere cheese
Instructions
- Prepare the sauce: In a saucepan, melt the butter over medium heat. Add the minced onion and cook until soft and translucent. Stir in the grated garlic and thyme, cooking for another minute until fragrant.
- Make the roux: Sprinkle the flour over the butter mixture and cook while stirring constantly for about 1-2 minutes to form a roux, which will thicken the sauce.
- Add milk and cheese: Gradually whisk in the milk (or cream substitute) to prevent lumps. Continue cooking until the sauce thickens and coats the back of a spoon. Remove from heat and stir in the 1/2 cup shredded Gruyere cheese until melted. Season with ground nutmeg, salt, and black pepper to taste.
- Layer the potatoes: Preheat your oven to 375°F (190°C). Grease a baking dish with butter. Arrange a layer of thinly sliced potatoes evenly in the dish. Pour a portion of the cheese sauce over the potatoes, ensuring they are well coated. Repeat layering with the remaining potatoes and sauce.
- Top and bake: Sprinkle the remaining 1 cup shredded Gruyere cheese evenly over the top layer. Cover the baking dish with foil and bake in the preheated oven for 45 minutes.
- Finish baking uncovered: Remove the foil and continue baking for an additional 15-20 minutes or until the top is golden brown and bubbly, and the potatoes are tender when pierced with a fork.
- Rest and serve: Let the gratin rest for 10 minutes before serving to allow the sauce to set and flavors to meld beautifully.
Notes
- Use a mandoline slicer for uniformly thin potato slices to ensure even cooking.
- For a gluten-free version, substitute the flour with a gluten-free flour blend.
- Heavy cream can be used instead of milk for an even richer gratin.
- Gruyere cheese adds a nutty flavor, but you can substitute with Swiss or Emmental cheese if desired.
- Add a pinch of ground nutmeg carefully, as it enhances the richness without overpowering.
- Leftover gratin tastes great reheated and can be served as a main or side dish.
Find it online: https://cozyplatter.com/rich-potato-gratin-recipe/