Ingredients

The following ingredients have 4 Servings
  • 2 tbsp unsalted butter
  • 1 large onion (sliced thinly)
  • 2 cloves minced garlic
  • 1/2 tsp salt
  • 1/2 tsp black pepper
  • ¼ tsp garlic salt
  • 7 oz (200g) cooked ham (cubed)
  • 4 red-skinned potatoes* (peeled and thinly sliced)
  • 4 tbsp unsalted butter
  • 6 tbsp plain (all-purpose) flour
  • 2 1/3 cups (560ml) full fat milk
  • 3/4 cup (180ml) double (heavy) heavy cream
  • 1 1/2 packed cups (150g) grated mature cheddar cheese
  • 1/2 packed cup (50g) grated Gruyere cheese
  • 1/2 packed cup (50g) grated Red Leicester cheese
  • 1 tbsp chopped fresh thyme

Instruction

  • Preheat oven to 180C/350F. Grease a large casserole dish.
  • Heat the butter in a frying pan (skillet) on a medium-high heat. Add the onion, garlic, ¼ tsp salt, ¼ tsp black pepper and ¼ tsp garlic salt. Fry for 5-6 minutes, stirring often until the onions soften. Turn off the heat.
  • Now make the cheese sauce. Melt the butter in a saucepan over a medium-high heat. Add the flour and stir with a whisk. Cook for 1 minute, stirring constantly.
  • Add the milk, a splash at a time, whilst stirring with the whisk until incorporated, and no lumps remain.
  • Add the cream and three quarters of the cheddar cheese. Stir until the cheese melts.
  • Arrange half of the potatoes in the bottom of the casserole dish. Top with half the onion mixture and half of the cubed ham. Sprinkle over ¼ tsp salt and ¼ tsp black pepper.
  • Pour over half the sauce.
  • Repeat the layers with the potato, onion, ham, salt, pepper and the remaining sauce.
  • Sprinkle the remaining cheddar cheese, the Gruyere and red Leicester over the top.
  • Cover the dish with foil and place in the oven for 75-90 minutes - until the potatoes are tender (you can check by pushing a knife through them, They should cut through potatoes easily).
  • Remove the foil and cook for a further 15-20 minutes until the cheese is golden and bubbly.
  • Remove from the oven and allow to rest for 5 minutes, then serve topped with a sprinkling of fresh thyme.