These Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe are an absolute delight for anyone who loves the perfect balance of fruity sweetness, warm spices, and buttery crumbly texture. Imagine biting into a tender shortbread base, layered with luscious, fragrant plum jam infused with chai spices, and topped with irresistible shortbread crackles that add a heavenly crunch. This recipe is truly a celebration of simple, wholesome ingredients coming together to create an unforgettable treat that feels like a cozy hug in every bite.

Ingredients You’ll Need

A white saucepan filled with three layers: the bottom layer is chopped, red and yellow peaches with smooth skin and soft texture; on top of the fruit, a layer of white granulated sugar is scattered unevenly; the top layer has light brown cinnamon powder sprinkled over the sugar. The saucepan is on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

For this Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe, the ingredients are straightforward but essential, each contributing magic to the overall flavor and texture. From fresh plums bursting with natural sweetness to aromatic chai spices that add warmth, each element plays a vital role in making these bars unforgettable.

  • Chopped red plums: The star ingredient that brings fresh, juicy sweetness and vibrant color.
  • Granulated sugar: Provides balanced sweetness without overpowering the natural fruit flavors.
  • Light brown sugar: Adds a subtle molasses depth making the jam richly textured and flavorful.
  • Chai spice: A fragrant blend that infuses the plum jam with cozy warming notes.
  • Cornstarch: Thickens the jam to a perfect consistency that won’t run but stays luscious.
  • All-purpose flour: The base for the shortbread, giving it structure and tenderness.
  • Unsalted butter: Cold and cubed, it creates tender, flaky layers in the shortbread crust and topping.
  • Vanilla bean paste: Enhances the shortbread with a sweet, aromatic touch.
  • Kosher salt: Balances sweetness and brings out true flavors in the dough.

How to Make Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe

Step 1: Prepare the Chai-Spiced Plum Jam

Start by putting chopped red plums, granulated sugar, light brown sugar, and chai spice into a pot over medium-high heat. As the plums cook down, they’ll release their gorgeous juices, creating the base for your jam. Use a masher to break down the plums further after 10 to 12 minutes. Keep cooking for about 8 more minutes to concentrate the flavors beautifully.

Step 2: Thicken the Jam

Mix cornstarch and water in a small bowl until smooth. Pour this slurry into the simmering plum mixture and cook for another 5 minutes. This step is crucial because it transforms the jam from juicy to a thick, luscious spread perfect for your bars. Once ready, transfer the jam to a bowl and chill it in the fridge—cool jam makes the layering process much easier later on.

Step 3: Make the Shortbread Dough

With your jam chilling, switch gears to the shortbread dough. Using a stand mixer with the paddle attachment, combine cold cubed butter, flour, granulated sugar, brown sugar, vanilla bean paste, and kosher salt. Mix on low speed until you achieve crumbly, pea-sized dough pieces. This light and crumbly dough will give your bars that famous shortbread crunch and tender texture that you want.

Step 4: Assemble the Bars

Preheat your oven to 350°F (180°C) and prepare an 8×8 inch baking pan lined with parchment paper. Reserve about half a cup of the crumbly shortbread dough aside for the topping. Press the remaining dough evenly into the bottom of the pan to form a solid base. Then, spread the chilled chai-spiced plum jam evenly over this shortbread crust for a rich, fruity layer.

Step 5: Add the Shortbread Crackles and Bake

Sprinkle the reserved shortbread crumbs on top of the jam, creating irresistible shortbread crackles that will bake into a golden, crunchy topping. Bake the bars for 33 to 38 minutes, or until the shortbread on top begins to turn golden brown. Once baked, let them cool completely on a wire rack, then chill briefly in the freezer for clean slicing. Dust with powdered sugar just before serving for a lovely finishing touch.

How to Serve Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe

Three square slices of crumb cake are stacked on top of each other on a parchment paper that lies on a white marbled surface. Each slice has three layers: a bottom thick pale beige shortbread layer, a middle bright red jam layer, and a top crumbly light beige streusel layer. The top crumb layer is uneven and slightly scattered with crumbs around the base. In the blurred background, there is another crumb cake slice and a large white container. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

These bars are gorgeous on their own, but you can elevate them with a light dusting of powdered sugar or a drizzle of honey just before serving. Fresh mint leaves or a sprinkle of finely chopped toasted almonds add a beautiful contrast to the warm spices, making every bite even more special.

Side Dishes

Pair these bars with a dollop of whipped cream or a scoop of vanilla ice cream to complement the tartness of the plum jam and the buttery shortbread. A cup of spiced chai tea or a latte is also a perfect companion, echoing the chai notes in the jam and warming your soul from the inside out.

Creative Ways to Present

For a festive touch, arrange the bars on a rustic wooden board surrounded by fresh plum slices and cinnamon sticks. You can also cut them into bite-sized pieces for a delightful party platter or serve them alongside cheese for an unexpected but delicious dessert pairing.

Make Ahead and Storage

Storing Leftovers

Once cooled, store your plum bars in an airtight container at room temperature for up to three days. For longer freshness, keep them refrigerated—they’ll stay tender and flavorful for up to a week.

Freezing

These bars freeze beautifully. Wrap them tightly in plastic wrap and place them in a freezer-safe container or bag. They can be frozen for up to two months. When you want to enjoy them, thaw overnight in the fridge for best texture.

Reheating

If you prefer a warm treat, pop a slice into a preheated oven at 300°F (150°C) for about 10 minutes or until warmed through. Avoid microwaving to preserve the shortbread’s crispness.

FAQs

Can I use frozen plums for the jam?

Yes, frozen plums work well if fresh ones aren’t available. Just thaw them first and drain any excess liquid before cooking to avoid a watery jam.

What is chai spice exactly?

Chai spice is typically a blend of warming spices like cinnamon, cardamom, ginger, cloves, and black pepper, which together bring a cozy and aromatic flavor often enjoyed in chai tea.

Can I substitute butter in the shortbread?

Butter is key for the signature shortbread texture and flavor. While you could try margarine or a butter substitute, the texture might be less tender and flaky.

How can I tell when the jam is thick enough?

The jam should be thick enough to coat the back of a spoon and hold its shape when spread. If it’s still runny, cook a little longer after adding the cornstarch slurry.

Why does the recipe chill the jam before spreading?

Chilling the jam helps it firm up slightly, making it easier to spread evenly without mixing into the shortbread crust and ensures clean layers in the final bars.

Final Thoughts

This Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe has quickly become one of my favorite go-to desserts for both everyday treats and special occasions. Its warm spices, rich plum flavor, and buttery shortbread texture are pure comfort on a plate. I encourage you to try this recipe soon—it’s truly a joy to make and impossible not to share.

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Plum Bars with Chai-Spiced Plum Jam and Shortbread Crackles Recipe

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4.2 from 13 reviews

These delicious Plum Bars feature a luscious homemade plum jam layered over a buttery shortbread crust, topped with crumbly shortbread bits for a perfect sweet and tangy dessert. The bars are baked until golden, then chilled to create a firm, easy-to-cut treat that’s great for any occasion.

  • Author: Sarah
  • Prep Time: 25 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 10 minutes
  • Yield: 16 bars
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Ingredients

Plum Jam

  • 3 cups chopped red plums
  • ¼ cup granulated sugar
  • 2 tbsp light brown sugar, packed
  • 1 ½ teaspoon chai spice
  • 2 ½ tablespoon cornstarch
  • ⅛ cup water

Shortbread Dough

  • 2 cups all-purpose flour (see notes for measuring)
  • 1 cup unsalted butter, cold and cubed
  • 1/3 cup granulated sugar
  • 2 tablespoon light brown sugar, packed
  • 3/4 teaspoon vanilla bean paste
  • ½ teaspoon kosher salt

Instructions

  1. Prepare Pan: Line a square 8×8 baking pan with parchment paper and set it aside for assembling the bars later.
  2. Cook Plum Jam: Combine chopped plums, granulated sugar, brown sugar, and chai spice in a pot. Cook over medium-high heat for 10-12 minutes until the plums release their juices. Use a masher to mash the fruit, then continue cooking another 8 minutes until thickened.
  3. Thicken Jam: Whisk cornstarch and water together, pour into the pot, and cook for an additional 5 minutes until the jam becomes thick and paste-like.
  4. Chill Jam: Transfer the thickened jam to a small bowl and refrigerate it until completely cool.
  5. Make Shortbread Dough: In a stand mixer fitted with the paddle attachment, combine cold cubed butter, flour, sugars, vanilla bean paste, and kosher salt on low speed. Mix until the dough is crumbly with pea-sized pieces, about 3-6 minutes.
  6. Preheat Oven: Set the oven to 350°F (180°C) to preheat while assembling the bars.
  7. Reserve Crumbs: Set aside ½ cup of the shortbread dough crumbs for topping later.
  8. Form Base Crust: Press the remaining shortbread dough evenly into the bottom of the prepared baking pan to form the crust layer.
  9. Layer Jam: Spread the chilled plum jam evenly over the pressed shortbread crust.
  10. Add Topping: Sprinkle the reserved shortbread crumbs evenly on top of the plum jam layer.
  11. Bake: Bake the bars for 33-38 minutes or until the top shortbread crumbs start to turn a golden brown color.
  12. Cool Bars: Remove from the oven and let the bars cool completely on a wire rack.
  13. Chill to Set: Once cooled, place the pan in the freezer for 15-20 minutes to harden the bars for easier cutting.
  14. Cut & Serve: Remove the bars from the pan using the parchment paper, cut into clean squares with a sharp knife, dust with powdered sugar, and enjoy.

Notes

  • Accurate measuring of flour is crucial; spoon and level the flour into the measuring cup rather than scooping to avoid dense shortbread.
  • Chilling the jam ensures it doesn’t make the crust soggy during baking.
  • Using vanilla bean paste adds a richer flavor than vanilla extract.
  • Freezing the bars briefly before cutting prevents crumbling and helps achieve clean slices.
  • Chai spice can be substituted with cinnamon, cardamom, and cloves if preferred.

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