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Blueberry Swirl Cheesecake Bars

Blueberry swirl cheesecake bars with a buttery graham cracker crust and creamy cheesecake filling, finished with marbled blueberry sauce. Baked at 325°F until set, then chilled for clean slices with a tangy, fruity swirl.
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Prep Time 20 minutes
Cook Time 43 minutes
chilling 4 hours
Total Time 5 hours 3 minutes
Servings: 9 servings
Course: Dessert
Cuisine: American
Calories: 390
Ingredients Equipment Method Notes

Ingredients
  

Crust
  • 1.5 cup graham cracker crumbs Use fine crumbs for a tighter crust.
  • 6 tbsp unsalted butter Melt and cool slightly before mixing.
  • 2 tbsp granulated sugar
Blueberry Swirl
  • 1.5 cup fresh blueberries Use fresh for best color; frozen can work too.
  • 2 tbsp sugar
  • 1 tbsp lemon juice
  • 1 tsp cornstarch
  • 1 tbsp water
Cheesecake Layer
  • 16 oz cream cheese Soften to room temperature for a smooth batter.
  • 0.5 cup granulated sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 0.25 cup sour cream Adds tang and helps keep the filling silky.

Equipment

  • 1 sheet pan
  • 1 saucepan

Method
 

Prepare the pan and crust
  1. Preheat oven to 325°F (165°C). Set out an 8x8-inch baking pan for lining and baking.
  2. Line an 8x8-inch baking pan with parchment paper. Leave overhang so you can lift the bars out later.
  3. Mix graham cracker crumbs, melted unsalted butter, and granulated sugar until evenly coated. The mixture should look like damp sand.
  4. Press the crust mixture into the prepared pan. Press firmly into an even layer so it bakes up crisp.
  5. Bake for 8 minutes at 325°F (165°C), then cool slightly. Let it firm up before adding the filling.
Make the blueberry swirl
  1. In a saucepan, combine fresh blueberries, sugar, lemon juice, cornstarch, and water. Stir until the cornstarch is fully dissolved.
  2. Cook over medium heat until the berries break down and the mixture thickens. You should see a glossy, spoonable sauce.
  3. Cool the blueberry mixture completely. This prevents the cheesecake batter from curdling when layered.
Assemble and bake
  1. Beat cream cheese and granulated sugar until smooth. Scrape the sides to remove any lumps.
  2. Add eggs one at a time and mix until just combined. Stop mixing as soon as each egg disappears.
  3. Mix in vanilla extract and sour cream until the batter is creamy and uniform. Avoid overmixing for a tender texture.
  4. Pour the cheesecake batter over the cooled crust. Spread gently to level the surface.
  5. Spoon the blueberry mixture over the cheesecake. Distribute in dollops for more visible swirls.
  6. Swirl with a knife to create a marbled pattern. Make a few gentle passes—avoid fully mixing the layers.
  7. Bake for 35–40 minutes at 325°F (165°C). The center should look set but still slightly soft when nudged.
Chill and serve
  1. Cool completely at room temperature. This helps the bars set properly before refrigeration.
  2. Refrigerate for at least 4 hours. Chill until firm for clean slicing and defined swirl lines.
  3. Slice into bars and serve. Lift using the parchment overhang for neat edges.

Notes

For the smoothest cheesecake, make sure the cream cheese is fully softened before mixing and cool the blueberry sauce completely before layering. Store bars covered in the refrigerator for up to 5 days. Freeze up to 2 months (wrap well) and thaw overnight in the fridge. For a lighter option, use reduced-fat cream cheese and sour cream—texture will be slightly softer but still sliceable.