Prepare for a flavour explosion with our cheddar-stuffed beef burgers made with lean beef mince and deliciously melty smoked cheddar. Topped with mouthwatering caramelized balsamic red onions, this burger will be sure to impress.
Heat 1 tsp butter and 1 tsp olive oil in a skillet over medium heat until it produces a haze.
Add 1 large red onion finely sliced, and cook for ten minutes, stirring occasionally. If they start to brown, turn the heat down.
After ten minutes, sprinkle with a pinch Shetland sea saltand continue cooking for another 10-15 minutes. When the onions are softened, add 1 tsp dark muscovado sugar and stir well.
Add 1 tbsp balsamic vinegar, stir well, and set aside.
To prepare the burgers:
Meanwhile, heat 2 tsp butter in a small skillet and gently fry 1 medium brown onion, finely chopped, until it softens.
Stir in 1 tbsp smoked paprika and cook for another minute.
Transfer to a large bowl and let cool.
Add 500 grams lean beef mince, 1/2 tsp garlic granules, 1 tsp dried parsley, 1/2 tsp dried thyme, salt and freshly ground black pepper to taste, 1 small egg, beaten, and 2 tbsp tomato puree, and combine well using your hands.
Divide the mixture into four even balls.
Press a hole into the centre of each ball using your thumb and place one tablespoon of 4 tbsp smoked cheddar cheese, grated, inside.
Mould the beef mince around the cheese so it is completely encased, then flatten it into a one-inch-thick burger shape. Repeat with the remaining balls.
Heat a non-stick grill pan over medium-high heat. Fry the burgers on each side for 8-10 minutes, turning only once.
Serve immediately on toasted burger buns with sliced tomato, lettuce leaves, caramelized red onion, and your desired condiments.