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. Recipe Ingredients  2 slices of sourdough bread½ cup grated cheese medley (mozzarella, cheddar, processed and any other you like)½ tsp minced garlic½ tsp dried rosemary3-4 tbsp caramelized onion and purple cabbagepinch of black pepperbuttermayonnaiseWhat The Truff Truffle Mustard Caramelised Onion + Purple Cabbage 1 cup shredded purple cabbage2 onions, finely sliced½ tbsp olive oil½ tbsp butter1 tsp salt1 tsp sugar Recipe Instructions Prepare the Caramelised Onion + Purple Cabbage:Sauté all the ingredients gently on low heat, stirring occasionally until fragrant and caramelizedSet aside Toastie: In a mixing bowl stir together the cheese, garlic, pepper, rosemary and 1 teaspoon of Truffle MustardPrepare the sandwich first by spreading butter, followed by mayonnaise on both slices of breadPlace a good amount of the caramelized onion + cabbage and the cheese mixture on one slice of bread and fasten with the second slicePlace the sandwich on the hot pan and press down the sandwich a flat wide spatula to grill well on both sidesRemove from pan and slice into twoServe with an extra helping of Truffle Mustard on the side and perhaps a drop of two of the White Truffle Oil