White Chocolate and Passionfruit Muffins - Whittaker's

Ingredients

• 1 Cup huka one (caster sugar) 
• Kiri rēmana (lemon zest, of one lemon)
• 1 tsp wanira (vanilla)
• ½ tsp tote (salt, fine) 
• 130g pata kūteretere (softened butter)
• 2 hēki (eggs, size 6)
• 1 ¾ Cup puehu parāoa noa (plain flour)
• 2 tsp pēkana paura (baking powder)
• ½ Cup miraka (milk) 
• 150g kōhia (passionfruit pulp, frozen pulp that has been defrosted, or fresh) 
• 150g tiakarete mā (white chocolate) 
• 60g frozen passionfruit pieces (optional) 
• 12-16 pieces of tiakarete mā (white chocolate) 
• 80g pata kūteretere (softened butter) 
• ⅔ Cup puehu huka (icing sugar)
• 100g kirīmi tīhi (cream cheese, room temperature)
• 50g tiakarete mā kua rewaina (melted white chocolate)
• ⅓ Cup wairanu kōhia (passionfruit syrup, optional)