Step-by-Step Instructions:
Preheat the oven to 400°F (200°C) and line a springform pan with parchment paper.
- Beat cream cheese and sugar until smooth.
- Add eggs one at a time, mixing well after each addition.
- Stir in heavy cream, flour, lavender, and lemon zest.
- Fold in blackberry preserves, creating a marble effect.
- Pour the batter into the prepared pan.
- Bake for 40-45 minutes until the top is deeply caramelized.
- Let the cheesecake cool to room temperature, then chill.