Ingredients

  • 75 ml olive oil
  • 1 onion, finely sliced
  • field mushroom
  • seasoning
  • 2 garlic cloves, crushed
  • 12 ounce butter
  • 3 ounces mature cheddar cheese, grated
  • 12 teaspoon coarse grain mustard
  • 12 egg, beaten

Method

  • Heat half the oil in a pan and gently cook the onions over a low heat for 40-45 mins stirring frequently until they are soft and caramelised.
  • Preheat the oven to 180c.
  • Removes the stalks from the mushrooms and chop them finely,.
  • Trim and peel the mushrooms and place them in a baking dish sprinkle the chopped stalks into the centre of the prepared mushrooms, season well.
  • Mix together the garlic with the remaining oil.
  • Brush the mushrooms with the garlic oil and top with a dot of butter.
  • Bake in the preheated oven for 10-12 mins.
  • Meanwhile, mix the cheese, egg and mustard together in a bowl.
  • Remove the mushrooms from the oven and preheat the grill to its highest setting.
  • Divide 2/3 of the onions between the mushrooms.
  • Spoon the rarebit mixture over the onions and top with the remaining onions.
  • Place the mushrooms under the hot grill until the cheese bubbles and turns golden brown.