Bar Kue Keju Blueberry KLASIK

Bahan-bahan (9 porsi)

• 18 Arnott's Marie crackers ((150g) or 16 Graham cracker squares (8 full sheets) (Note 1))
• 100 g / 3.5 oz unsalted butter (, melted)
• 2 tbsp sugar
• 320 g / 12 oz Philadelphia cream cheese (, softened)
• 1 tbsp plain flour
• 1/3 cup sour cream
• 1 cup / 220 g white sugar (, superfine or caster is best)
• 1 1/2 tsp vanilla extract
• Zest of 1 lemon
• 2 eggs (, at room temperature)
• 250 g / 8 oz (~1 3/4 cups) blueberries ((2 Aust punnets))
• Icing sugar / confection sugar (, for dusting (optional))