Biskuit Roti Pendek Parmesan

Bahan-bahan (25 porsi)

• 3.5 oz / 100g salted butter (, chopped (Note 1))
• 3.5 oz / 100g parmesan cheese (, grated (Note 2))
• 3.3 oz / 95g plain flour
• 1 tbsp rosemary leaves (, roughly chopped (or 2 1/2 tsp dried rosemary))