Yogurt Sugar Muffins

2 1/2 cups self-raising flour
1 1/2 cups caster sugar
1 1/2 cups yogurt ( I used Coles Passionfruit Swirl)
2 eggs
1 teaspoon vanilla
250g melted butter
1-2 tablespoons lemon juice


Preheat oven to 190°C. Lightly grease 12 hole muffin tray.
Sift flour into a bowl & stir in 1/2 cup of the caster sugar.
Make a well in the centre.
Whisk together yougurt, eggs, vanilla & pour into well.
stir until just combines.  Mixture should still be lumpy.
Pour into muffin tray & bake for 30 minutes or until risen & springy to touch.
Brush the warm muffins with lemon juice & roll in the remaining caster sugar.