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Best Ever Potato Gratin

If you're looking for the ultimate comfort food side dish, you've come to the right place. There's nothing quite like a creamy, cheesy potato gratin—it's the kind of dish that brings warmth and happiness to any meal. This version is Slimming World-friendly, which means you can indulge without the guilt. Perfect as a side to a roast dinner or as the star of a cosy vegetarian meal, this gratin is bound to become a family favourite.
Nutritional Information
Slimming World: Syn Free [when using cheese and milk as Healthy Extra A choices]
Weight Watchers: 4 WW Points Per Serving
Calories: 210 Per Serving
Course Main Course, Side Dish
Prep Time 15 minutes
Cook Time 50 minutes
Total Time 1 hour 5 minutes
Servings 4

Ingredients

  • 800g Potatoes (Maris Pipers or King Edwards are best) [Peeled, Thinly Sliced]
  • 1 Large Onion [Peeled, Finley Sliced]
  • 2 Garlic Cloves [Minced]
  • 150ml Skimmed Milk
  • 150ml Vegetable Stock
  • 80g Reduced Fat Cheddar Cheese [Grated]
  • 1 tsp Dried Thyme
  • Pinch Nutmeg
  • Salt and Pepper to taste
  • Low-Calorie Cooking Spray

Instructions

  • Preheat the oven: Preheat your oven to 180°C (fan 160°C) / Gas Mark 4.
  • Prepare the potatoes: Thinly slice the potatoes using a sharp knife or mandoline for even slices.
  • Cook the onion and garlic: Heat a frying pan with low-calorie cooking spray. Sauté the onion and garlic on medium heat for 3-4 minutes until softened but not browned.
  • Create the sauce: In a bowl, mix the skimmed milk and vegetable stock together. Add the thyme, nutmeg, salt, and black pepper.
  • Assemble the gratin: Lightly grease a medium ovenproof dish with low-calorie cooking spray. Layer half of the potatoes evenly, followed by the sautéed onion and garlic. Pour half of the sauce mixture over the top.
  • Repeat: Add the remaining potatoes, spreading them evenly. Pour the rest of the sauce over the top and press the potatoes gently to ensure everything is coated.
  • Bake: Cover the dish with foil and bake for 40 minutes.
  • Add cheese: Remove the foil, sprinkle the grated reduced-fat cheddar over the top, and return to the oven for 10 minutes or until the cheese is golden and bubbling.
  • Serve: Allow the gratin to rest for 5 minutes before serving. Enjoy as a delicious side dish with roasted meats or a hearty vegetarian main.