Blackberry Swirl Cheesecake Brownies

Ingredients

• 1/2 cup (1 stick) unsalted butter, melted
• 1 cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1/3 cup unsweetened cocoa powder
• 1/2 cup all-purpose flour
• 1/4 teaspoon salt
• 1/4 teaspoon baking powder
• 8 oz cream cheese, softened
• 1/3 cup granulated sugar
• 1 large egg
• 1/2 teaspoon vanilla extract
• 1 cup fresh or frozen blackberries
• 2 tablespoons sugar
• 1 teaspoon lemon juice