Crack the egg into a large bowl and whisk gently to break up the yolk.
Add the mince and season with a wee bit of salt and pepper.
Get your hands in and mix well, breaking up the mince and getting it all coated with the egg.
Next, add the sachet of fajita spice and continue to mix with your hands.
Divide the mixture into four equal portions and shape into burgers.
Cook the burgers on a grill, in a frying pan or under the grill until they are cooked all the way through.
I cooked mine on a George Foreman grill for 8 minutes.
Serve on a brioche bun with lettuce, pickles, mozzarella and salsa.
Mix 80g of sweetcorn with 80g of kidney beans and 10 finely chopped cherry tomatoes. Season with paprika.
Serve with 100g of tortilla chips.
Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.