Sour cherry cheesecake

Ingredients

• 200 g digestive biscuits
• 1 tbsp plain flour
• 200 g caster sugar
• 1 tbsp cornflour
• 400 g frozen, pitted sour cherries
• 1 tbsp lemon juice
• 1 tbsp vanilla extract
• 100 g unsalted butter
• 1 tsp unwaxed lemon zest
• 200 g strained full-fat Greek-style yoghurt
• 3 large eggs
• 600 g full-fat cream cheese
• 150 g caster sugar