Eggless Blueberry and White Chocolate Baked Cheesecake

Ingredients

• 125 g / 1 cup plain blueberries
• 56 3/4 g / 0.25 cup butter
• 1 Tbsp / 1 Tbsp cornflour
• 500 g / 1.1 lb cream cheese
• 210 g / 2.5 cups digestive biscuits
• 317 1/3 ml / 1.33 cups double cream
• 300 g / 1.5 cups granulated sugar
• 81 1/3 ml / 0.33 cup lemon juice
• 500 g / 1.1 lb ricotta cheese
• 1 1/2 tsps / 1.5 tsps vanilla extract
• 66 ml / 0.5 cup white chocolate