Rich Blackberry Cheesecake Brownies with a Fudgy Swirl

Ingredients

• 6 oz (170 g) fresh or frozen blackberries
• 2 tablespoons granulated sugar
• 1 tablespoon water
• 1 teaspoon fresh lemon juice
• 10 tablespoons (140 g) unsalted butter, melted
• 1 cup (200 g) granulated sugar
• 1/4 cup (50 g) packed light brown sugar
• 2 large eggs, room temperature
• 2 teaspoons vanilla extract
• 1/2 teaspoon fine salt
• 2/3 cup (65 g) unsweetened cocoa powder
• 2/3 cup (85 g) all-purpose flour
• 1/2 cup (85 g) dark chocolate chips
• 8 oz (225 g) full-fat cream cheese, softened
• 1/4 cup (50 g) granulated sugar
• 2 tablespoons sour cream
• 1 large egg, room temperature
• 1 teaspoon vanilla extract
• Pinch of fine salt