01 -
Heat your oven to 350°F (175°C). Get your 8×8-inch baking pan ready by lining it with parchment paper or giving it a light grease.
02 -
In a bowl, stir together the melted butter, sugar, eggs, and vanilla until they're well mixed. Add the cocoa powder, flour, salt, and baking powder and gently mix until just combined - don't overdo it!
03 -
Spread the brownie batter evenly in your prepared pan, making sure it reaches all the corners.
04 -
In another bowl, beat together the cream cheese, sugar, egg, and vanilla until you get a smooth, creamy mixture.
05 -
Drop spoonfuls of the cheesecake mixture over the brownie batter, then use a butter knife to gently swirl them together.
06 -
Warm the blackberry preserves briefly in the microwave until they're a bit runny, then drizzle over the top. Use your knife again to create beautiful purple swirls throughout.
07 -
Bake for 30-35 minutes, or until a toothpick comes out with just a few moist crumbs when you poke the center. Let the brownies cool completely in the pan before cutting.
08 -
If you'd like, top with fresh blackberries before serving for an extra pop of color and flavor.