Cheesy Bacon & Egg Sandwich With Sweet Onion Relish

Thinly slice the red onions, grate or slice the cheddar and lay out the bread, bacon and eggs. Measure the brown sugar, balsamic vinegar and butter.

Melt half the butter in a frying pan over medium heat. Add the red onion and cook for about 10 minutes, stirring occasionally. Add the brown sugar and balsamic vinegar and cook for a further 5–7 minutes until soft, glossy and sticky. Set aside.

Heat the cooking oil or a little of the remaining butter in a frying pan. Crack in the eggs and cook until the whites are set and the yolks are done to your liking. Season lightly with salt and black pepper.

Cook the bacon over medium heat until browned and crisp. Transfer to kitchen paper to drain briefly.

Lightly toast the bread if desired. Divide the cheddar between four slices, then top each with two slices of bacon, one fried egg and a generous spoonful of sweet onion relish. Close with the remaining bread slices.

Press the sandwiches gently, cut in half and serve immediately while the cheese is melting and the egg is hot. Add extra onion relish on the side if desired.