Preheat the oven to 400 degrees F. Grease a 9-inch springform pan with some butter and line with parchment paper.
For the cheesecake: In a large bowl, combine the cream cheese, cream, sugar, flour, eggs, vanilla and salt. Beat with an electric hand mixer until combined. Pour into the prepared pan and bake until set and well browned, 50 to 55 minutes.
For the macerated blackberries: While the cheesecake bakes, toss together the blackberries, sugar and lemon zest and juice. Cover and place in the fridge until you are ready to serve.
Remove the cheesecake from the oven and allow it cool, about 45 minutes.
Release the cheesecake from the pan and slice. Grab the blackberries and give them a final toss. Slice and serve the cheesecake topped with the macerated blackberries.