Slimming World's muffins with smoked salmon

Cut the muffins in half horizontally and toast under the grill. Put the yogurt into a bowl. Cut off 2 wedges from the lemon. Finely grate the zest from the remaining lemon and add to the yogurt. Arrange a slice of smoked salmon on top of each halved muffin. Squeeze over a little lemon juice. Spoon 1tbsp of lemon yogurt on top of each muffin. Season with black pepper and serve with a lemon wedge.