Truffle, Cheese + Caramelised Onion + Cabbage Toastie

A grill cheese sandwich or toastie is perhaps the world’s most loved comfort foods. Perfect for hangover mornings, afternoon bites and of course, as a whole meal, with (let’s be honest) a side bag of chips (I know none of y’all are grabbing a bowl of salad with that!).

This toastie I share has the umami wonderness of Truffle Oil speckled mustard from an Indian brand called What The Truff – they sent across this as well as the white truffle oil – both of which work gorgeously for me in so many dishes.

The highlight of course is the caramelized filling – braised purple cabbage and onions in butter, olive oil, salt and sugar – a delicious condiment that works not just in sandwiches but in salads, bake dishes, in omelette and with a rice dish.


The Recipe


  • 2 slices of sourdough bread
  • ½ cup grated cheese medley (mozzarella, cheddar, processed and any other you like)
  • ½ tsp minced garlic
  • ½ tsp dried rosemary
  • 3-4 tbsp caramelized onion and purple cabbage
  • pinch of black pepper
  • butter
  • mayonnaise
  • What The Truff Truffle Mustard
  • Caramelised Onion + Purple Cabbage
  • 1 cup shredded purple cabbage
  • 2 onions, finely sliced
  • ½ tbsp olive oil
  • ½ tbsp butter
  • 1 tsp salt
  • 1 tsp sugar


  • Prepare the Caramelised Onion + Purple Cabbage:
  • Sauté all the ingredients gently on low heat, stirring occasionally until fragrant and caramelized
  • Set aside
  • Toastie:
  • In a mixing bowl stir together the cheese, garlic, pepper, rosemary and 1 teaspoon of Truffle Mustard
  • Prepare the sandwich first by spreading butter, followed by mayonnaise on both slices of bread
  • Place a good amount of the caramelized onion + cabbage and the cheese mixture on one slice of bread and fasten with the second slice
  • Place the sandwich on the hot pan and press down the sandwich a flat wide spatula to grill well on both sides
  • Remove from pan and slice into two
  • Serve with an extra helping of Truffle Mustard on the side and perhaps a drop of two of the White Truffle Oil