Savoury brioche buns with feta and blue cheese

Ingredients

• 65 g butter
• 1/2 cup milk
• 1 tsp sugar
• 1 heaped tsp yeast
• 2 eggs, lightly beaten
• 250 g flour
• 10 large leaves of silverbeet, stalks removed
• 2 roasted capsicums (store-bought is fine)
• 120 g feta
• 2 tbsp blue-vein cheese
• 1 tbsp butter, melted
• Egg and milk, for egg wash