Follow these easy steps to create your Irresistible Blackberry Cream Cheese Brownies:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan or line it with parchment paper for easier removal.
2. Mix Wet Ingredients: In a large bowl, combine the melted butter, granulated sugar, and brown sugar. Whisk until well combined. Add the eggs one at a time, whisking after each addition. Stir in the vanilla extract.
3. Add Dry Ingredients: Slowly sift in the flour, cocoa powder, and salt. Stir until just combined, being careful not to overmix.
4. Prepare Cream Cheese Mixture: In a separate bowl, beat the softened cream cheese, powdered sugar, and lemon juice together until smooth and creamy.
5. Assemble Brownies: Pour half of the brownie batter into the prepared pan, spreading evenly. Drop spoonfuls of the cream cheese mixture on top, then dollop the remaining brownie batter over it.
6. Swirl the Mixtures: Use a knife or toothpick to create swirls of cream cheese and brownie batter throughout. Optionally, scatter fresh blackberries on top.
7. Bake: Place the pan in the preheated oven and bake for 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs (not wet).
8. Cool: Remove from the oven and let the brownies cool in the pan for about 15-20 minutes before transferring to a wire rack to cool completely.
9. Slice and Serve: Once the brownies are cool, cut them into squares and serve.