Mini Butter Buns

Dough
150g bread flour
15g sugar
1/8 tsp salt
1/2+1/8 tsp instant yeast (sorry for the funny measurements because I halved the recipe)
90ml water
10g unsalted butter
Filling
50g butter
10g icing sugar
pinch of salt (I added because I like it a bit salty)
Method
1. Mix the ingredients in the filling. Chill in the fridge for 1 hour so that it is easier to wrap later.
2. Mix all ingredients in the dough except butter and knead until the dough is smooth.
3. Add in butter and continue to knead the dough until it becomes smooth and elastic and able to stretch into a thin film without breaking.
4. Place the dough in a lightly greased mixing bowl. Cover with cling wrap and let proof for about 60 minutes.
5. Lightly knead the dough to punch out the gas. Divide the dough into small balls of 10g each.
6. Slightly flatten the small dough, wrap in the butter fillings and pinch to seal well. Roll the balls round and place them in a greased baking tray 1cm apart (I use 8x8in tray which is a little too big).
7. Cover with cling wrap and proof for another 40 minutes.
8. Brush the top with egg mixture and sprinkle sugar on top.
9. Bake in preheated oven at 180 deg C for 20 minutes.