Sourdough Cheesecake Brownie Bars (Printer-friendly)
Rich cheesecake meets fudgy sourdough brownies in these decadent swirled bars with a unique tangy twist.
# What You Need:
→ Sourdough Brownie Base
01 - 1/2 cup (1 stick) unsalted butter
02 - 3/4 cup dark chocolate, chopped
03 - 3/4 cup granulated sugar
04 - 2 large eggs
05 - 1 tsp vanilla extract
06 - 1/3 cup sourdough starter (active, discard, or fed)
07 - 1/2 cup all-purpose flour
08 - 1/4 tsp salt
→ Cheesecake Layer
09 - 8 oz cream cheese, softened
10 - 1/4 cup granulated sugar
11 - 1 large egg
12 - 1 tsp vanilla extract
# How to Make It:
01 - Preheat the oven to 350°F. Line an 8×8 inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
02 - In a medium saucepan over low heat, melt the butter and dark chocolate together, stirring continuously until smooth and glossy. Remove from heat and stir in 3/4 cup of sugar until dissolved.
03 - Allow the chocolate mixture to cool slightly, then whisk in the eggs one at a time until fully incorporated. Add the vanilla extract and sourdough starter, mixing until smooth and well combined.
04 - Gently fold in the all-purpose flour and salt until just incorporated — avoid overmixing to keep the brownies tender.
05 - Reserve 1/4 cup of the brownie batter for the swirl topping. Spread the remaining batter evenly across the bottom of the prepared pan.
06 - In a medium bowl, beat the softened cream cheese with 1/4 cup of sugar using an electric mixer or whisk until smooth and creamy. Add the egg and vanilla extract, beating until the mixture is silky and lump-free.
07 - Spread the cheesecake mixture evenly over the brownie base in the pan, covering it as uniformly as possible.
08 - Dollop small spoonfuls of the reserved brownie batter over the cheesecake layer. Use a knife or skewer to drag through the batter in figure-eight motions, creating decorative swirls.
09 - Bake for 30 to 35 minutes, or until the center is just set and a toothpick inserted comes out with a few moist crumbs clinging to it.
10 - Let the bars cool completely in the pan on a wire rack. Refrigerate for at least 1 hour before slicing into 16 squares for the cleanest cuts.
# Expert Tips:
01 -
- The sourdough starter adds a barely there tang that makes people ask what your secret ingredient is, and they never guess it.
- You get two desserts in one pan without any extra effort, which feels like a small miracle on a busy weekend.
- They slice beautifully after chilling and look far more impressive than the twenty five minutes of prep would suggest.
02 -
- Underbaking slightly is always better than overbaking because these bars continue to set as they chill and nobody wants a dry brownie.
- The swirl pattern is easier to achieve if your cheesecake layer is at room temperature because cold dollops resist being pulled through cleanly.
03 -
- Warm your knife under hot water and dry it before each cut for bakery clean edges that will make people think you bought them from a professional.
- Adding a tablespoon of espresso powder to the brownie batter intensifies the chocolate flavor without making them taste like coffee, and it is a trick worth keeping in your back pocket.