Ingredients:

  • 1.1 kg (2.5 lbs) Russet Potatoes, peeled and sliced into 0.6 cm rounds, then quartered
  • 45 g (3 tbsp) Unsalted Butter
  • 25 g (3 tbsp) All-Purpose Flour
  • 350 ml Whole Milk
  • 235 ml Half-and-Half
  • 2 cloves Garlic, minced
  • 6 g (1 tsp) Kosher Salt
  • 1/2 tsp Freshly Ground Black Pepper
  • 0.5 g (1/4 tsp) Ground Nutmeg

Instructions:

  1. Peel 1.1 kg (2.5 lbs) of Russet potatoes and slice into 0.6 cm rounds, then quarter them. Note: Quartering helps the potatoes stack better in the dish, ensuring no dry spots.
  2. Soak the potato pieces in cold water for 10 minutes. Until the water looks cloudy with released starch.
  3. Drain the potatoes and pat them completely dry with a clean kitchen towel. Note: Excess water will thin out your sauce and make it runny.
  4. Melt 45 g (3 tbsp) of butter in your saucepan over medium heat and whisk in 25 g (3 tbsp) of flour. Until it smells slightly nutty and looks like wet sand.
  5. Slowly whisk in 350 ml of whole milk and 235 ml of half and half. Note: Adding liquid slowly prevents lumps from forming in your roux.
  6. Stir in 2 cloves of minced garlic, 6 g (1 tsp) of salt, pepper, and 0.5 g (1/4 tsp) of nutmeg. Until the sauce is glossy and beginning to thicken.
  7. Add the dried potatoes to the sauce and simmer gently for 5-8 minutes. Until the potatoes are slightly flexible but not breaking.
  8. Preheat your oven to 190°C (375°F) and grease your 9x13 inch baking dish.
  9. Pour the potato and sauce mixture into the dish, smoothing it into an even layer.
  10. Mix the 115 g of cheddar and 50 g of fontina together and spread over the top, then finish with 25 g of grated parmesan.
  11. Bake for 60 minutes until the top is bubbling and a deep golden brown.
  12. Let the dish rest for 10 minutes on the counter. Until the sauce has set and no longer looks liquid when sliced. Sweet Potato Cranberry Gratin with Brown Butter Pecan Crumble — Sweet Potato Cranberry Gratin is a magnificent upgrade to your holiday table....The Ultimate Creamy Leek Gratin Recipe Foolproof Golden — Discover how to make a foolproof luxurious Leek Gratin with a crispy golden t...Oven Roasted Potatoes: Crispy Baked in 45 Minutes — Discover the best oven roasted potatoes recipe for a shatter crisp exterior a... $img_2$