150g unsalted butter, diced and softened
1 small French shallot (eschallot), finely chopped
2 tablespoons finely chopped parsley
2 tablespoons chopped chives
1 teaspoon chopped capers
1 teaspoon Dijon mustard
1 teaspoon grated lemon rind
1 dash Worcestershire sauce
1/2 teaspoon salt
1 tablespoon lemon juice
Make the flavoured butter by placing the butter, shallot, parsley, chives, capers, mustard, lemon rind, Worcestershire sauce, salt and a good grinding of freshly ground black pepper into a small bowl. Using a fork or wooden spoon, beat the mixture until the ingredients are combined. Slowly add the lemon juice, beating as you go, until combined.
Place on a sheet of non-stick baking paper and then roll and shape the butter into a log about 4cm in diameter, twisting the ends like a cracker. Chill for about 1 hour; store any unused butter in the fridge for up to 2 weeks.
Place a grill pan or heavy frying pan over a high heat. Cook the steaks in the hot pan until to your liking. Place two 1cm slices of the chilled butter on each steak and pop under a hot grill until starting to melt. Serve immediately. Serves 2