Salted Caramel Apple Crumble Bars: Your New Favorite Fall Dessert
These Salted Caramel Apple Crumble Bars offer all the comforting essence of classic apple pie, conveniently packaged into a handheld dessert perfect for sharing.
Featuring a buttery shortbread crust, a generously spiced apple filling, a rich homemade salted caramel drizzle, and a crunchy oat crumble topping, this recipe uses 12 common pantry ingredients and bakes in under an hour.
Their sturdy structure makes them ideal for bake sales, potlucks, or easy lunchbox treats, while the warm spice notes make them an excellent addition to any fall gathering.
Salted Caramel Apple Crumble Bars
Prepare Salted Caramel Apple Crumble Bars with a buttery shortbread crust, tender spiced apples, rich homemade salted caramel, and crunchy oat streusel topping.
Ingredients
- For the Shortbread Crust:
- 1 ½ cups (190g) all-purpose flour, spooned and leveled
- ½ cup (100g) granulated sugar
- ¼ teaspoon salt
- ½ cup (113g) unsalted butter, cold and cubed
- 1 large egg yolk
- For the Apple Filling:
- 6 medium (approx. 2.5 lbs / 1.1 kg) Granny Smith apples, peeled, cored, and diced into ½-inch (1.25 cm) pieces
- ¼ cup (50g) granulated sugar
- 1 tablespoon all-purpose flour
- 1 teaspoon ground cinnamon
- ¼ teaspoon ground nutmeg
- 1 tablespoon fresh lemon juice
- For the Salted Caramel Sauce:
- 1 cup (200g) granulated sugar
- ¼ cup (60ml) water
- ½ cup (120ml) heavy cream, warmed
- 4 tablespoons (57g) unsalted butter, cut into 4 pieces
- 1 teaspoon flaky sea salt
- For the Crumble Topping:
- 1 cup (125g) all-purpose flour
- ½ cup (50g) old-fashioned rolled oats
- ½ cup (100g) packed light brown sugar
- ½ teaspoon ground cinnamon
- ¼ teaspoon salt
- ½ cup (113g) unsalted butter, cold and cubed
Instructions
- Preheat oven to 350°F (175°C). Line a 9×13 inch (23×33 cm) baking dish with parchment paper, allowing an overhang on the longer sides.
- Whisk together 1 ½ cups (190g) all-purpose flour, ½ cup (100g) granulated sugar, and ¼ teaspoon salt in a large bowl. Cut in ½ cup (113g) cold, cubed butter using a pastry blender or fingertips until the mixture resembles coarse crumbs. Stir in 1 large egg yolk until the dough comes together.
- Press dough evenly into the bottom of the parchment-lined baking dish. Bake for 20 minutes until the edges are lightly golden brown and the crust is set. Remove from oven and set aside to cool slightly.
- Combine 6 diced Granny Smith apples, ¼ cup (50g) granulated sugar, 1 tablespoon all-purpose flour, 1 teaspoon ground cinnamon, ¼ teaspoon ground nutmeg, and 1 tablespoon fresh lemon juice in a large bowl. Toss gently until apples are evenly coated.
- Transfer apple mixture to a large skillet over medium heat. Cook for 8-10 minutes, stirring occasionally, until apples have slightly softened but still retain some texture. Remove from heat.
- Combine 1 cup (200g) granulated sugar and ¼ cup (60ml) water in a medium heavy-bottomed saucepan. Cook over medium-high heat without stirring until the sugar dissolves and the mixture begins to boil.
- Cook sugar syrup without stirring, swirling the pan gently occasionally, for 8-12 minutes until the mixture turns a deep amber color. Immediately remove from heat.
- Carefully and slowly pour ½ cup (120ml) warmed heavy cream into the hot caramel (mixture will bubble vigorously). Whisk constantly until the caramel is smooth. Add 4 tablespoons (57g) unsalted butter and 1 teaspoon flaky sea salt, whisking until butter is fully melted and incorporated. Set aside to cool slightly; caramel will thicken as it cools.
- Combine 1 cup (125g) all-purpose flour, ½ cup (50g) old-fashioned rolled oats, ½ cup (100g) packed light brown sugar, ½ teaspoon ground cinnamon, and ¼ teaspoon salt in a medium bowl. Cut in ½ cup (113g) cold, cubed butter using a pastry blender or fingertips until the mixture forms coarse crumbs.
- Spread cooked apple filling evenly over the partially baked shortbread crust. Drizzle about half of the prepared salted caramel sauce over the apple layer. Sprinkle crumble topping evenly over the caramel and apples.
- Return dish to the preheated 350°F (175°C) oven. Bake for 30-35 minutes until the crumble topping is golden brown and the apple filling is bubbling at the edges.
- Remove bars from the oven and cool completely in the pan on a wire rack for at least 1 hour. Drizzle the remaining salted caramel sauce evenly over the cooled bars.
- Transfer pan to the refrigerator and chill for at least 3 hours, or preferably overnight, until bars are firm and caramel is set for clean cuts.
- Lift the entire slab of bars from the pan using the parchment paper overhang. Place on a cutting board and cut into 24 even squares or rectangles. Serve chilled or at room temperature.
Notes
- Warming heavy cream before adding to hot sugar prevents caramel seizing and creates a smoother sauce.
- Chilling bars for the full recommended 3 hours or longer ensures best texture and clean cuts.
- Store leftover bars in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 5 days.
Pro Tips for Perfect Salted Caramel Apple Crumble Bars
Ingredient Tips
- Apple Variety & Preparation:Use a blend of 2 large Granny Smith and 1 large Honeycrisp apples, totaling approximately 3.5 cups once peeled, cored, and diced into uniform 1/2-inch pieces. This combination delivers optimal tartness, sweetness, and holds texture well, preventing a mushy filling. Immediately toss diced apples with 1 tablespoon fresh lemon juice to prevent browning and add a bright counterpoint to the sweetness.
- Flour Measurement Accuracy:For both the crust and crumble (totaling 3 cups all-purpose flour), measure precisely by spooning flour into your dry measuring cup until overflowing, then level with a straight edge. This technique prevents over-packing, which can add up to an extra 1/4 cup of flour, leading to a dense, tough crust and crumble.
- Butter Temperature & Type:Ensure 1.5 sticks (12 tablespoons) of unsalted butter for the crust and crumble are very cold and cut into 1/2-inch cubes. The cold butter creates steam pockets during baking, resulting in a flaky, tender texture. For the caramel, use 2 tablespoons of room temperature unsalted butter for a smoother emulsification.
- Salt for Caramel:Incorporate 1/2 teaspoon flaky sea salt, such as Maldon, directly into the warm caramel sauce right before pouring. This provides distinct bursts of salinity that cut through the sweetness, enhancing the overall flavor profile more effectively than fine salt.
Technique Tips
- Perfect Crumble Texture:Combine 2 cups flour, 1/2 cup granulated sugar, 1/4 cup light brown sugar, and 1/4 teaspoon salt with 1 stick (8 tablespoons) of cold, cubed unsalted butter. Use a pastry blender or your fingertips to work the butter into the dry ingredients for 3-4 minutes, until the mixture resembles coarse meal with some pea-sized pieces of butter remaining. This ensures a tender, not tough, topping.
- Pre-baking the Crust:Press 2/3 of the crumble mixture evenly into an 8×8 inch baking pan lined with parchment paper, extending 1/2 inch up the sides. Bake at 375°F (190°C) for 15 minutes, or until the edges are lightly golden brown. This crucial step prevents a soggy bottom crust, ensuring a firm, crisp foundation.
- Caramel Sauce Precision:In a heavy-bottomed saucepan, melt 1/2 cup granulated sugar over medium heat without stirring, swirling the pan occasionally. Cook for 6-8 minutes until it transforms into a deep amber liquid. Immediately remove from heat and carefully whisk in 1/4 cup warm heavy cream and 2 tablespoons room temperature unsalted butter until completely smooth. The specific heat and sequence prevent crystallization and seizing.
- Layering for Success:After pre-baking, spread half of the prepared caramel sauce evenly over the warm crust. Distribute the spiced 1/2-inch diced apples in a single, even layer over the caramel. Drizzle the remaining caramel sauce over the apples, then evenly scatter the remaining 1/3 of the crumble mixture on top. This strategic layering ensures caramel and apple in every bite.
- Optimal Baking & Doneness:Bake the assembled bars at 350°F (175°C) for 40-45 minutes. Look for a deeply golden brown crumble topping and apple filling actively bubbling at the edges of the pan. To confirm apple doneness, gently insert a thin skewer or knife into the center; it should slide in with minimal resistance, indicating the apples are fork-tender.
- Cooling for Clean Slices:Once baked, transfer the pan to a wire rack and allow the bars to cool completely for a minimum of 2 hours, but preferably 4 hours at room temperature. This extended cooling time is vital for the caramel to set fully and the bars to firm up, preventing them from crumbling or oozing when sliced. For even cleaner cuts, refrigerate for 30 minutes after cooling.
Common Issues
- Soggy Bottom Crust:Ensure your crust is pre-baked for the full 15 minutes at 375°F (190°C) until visibly golden at the edges. Additionally, before adding apples, toss the 3.5 cups of diced fruit with 1 tablespoon of cornstarch or flour to absorb excess moisture released during baking.
- Runny Caramel:After whisking in cream and butter, return the caramel mixture to low heat and simmer, stirring constantly, for an additional 2-3 minutes. The sauce should noticeably thicken and coat the back of a spoon, ideally reaching 220°F (104°C) on a candy thermometer for optimal setting.
- Bars Falling Apart When Slicing:This is often due to insufficient cooling. Always allow the bars to cool completely in the pan for at least 2-4 hours at room temperature. For ultra-clean cuts, briefly refrigerate the fully cooled bars for 30 minutes, then use a large, sharp knife warmed under hot water and wiped dry between each slice.
How to Store, Reheat, and Make Ahead for Convenience
Refrigerator Storage
Duration: 5-7 days in airtight container
Store your Salted Caramel Apple Crumble Bars in an airtight container in the refrigerator to maintain their freshness. An airtight glass container is ideal to prevent the bars from absorbing any ambient refrigerator odors. Over time, the crumble topping will gradually soften, losing some of its initial crispness, noticeably after day 3. The rich salted caramel may firm up slightly when chilled but will remain flavorful. The overall quality of the bars, particularly the texture of the apples and the crumble, begins to decline after day 5, as the apple filling can become a little mushier.
Freezer Storage
Duration: 2-3 months
To freeze, ensure the bars are completely cooled. For best results, individually wrap each bar tightly in plastic wrap, then follow with a layer of aluminum foil. Place the wrapped bars in a freezer-safe airtight container or bag to prevent freezer burn and protect their texture. To thaw, transfer frozen bars to the refrigerator overnight (approximately 8-12 hours) or allow them to sit at room temperature for about 1 hour. You may notice the apples are slightly softer and the crumble less crisp than when freshly baked, but the delicious flavor will be well-preserved.
Reheating Instructions
- Oven (Recommended for best texture):Preheat oven to 350°F (175°C). Place bars on a baking sheet and heat for 10-15 minutes. The bars are ready when the crumble topping feels slightly crisp and the caramel filling is warm and gently bubbly around the edges. This method effectively restores the crumble’s crispness.
- Microwave (Acceptable for quick reheating):Place a single bar on a microwave-safe plate. Heat on high for 20-40 seconds, adjusting for your microwave’s power. The bar is warm when the caramel is melted and the apple filling is heated through. Be aware that microwaving will significantly soften the crumble topping and can cause the caramel to become extremely hot very quickly.
- Air Fryer (Excellent for restoring crispness):Preheat air fryer to 300°F (150°C). Place bars in a single layer in the basket. Heat for 5-7 minutes. Visually check for a re-crisped crumble and warm filling.
Make-Ahead Tips
For added convenience, various components of the Salted Caramel Apple Crumble Bars can be prepared in advance. The apple filling mixture (apples, spices, lemon juice) can be made up to 1-2 days ahead and stored in an airtight container in the refrigerator. The salted caramel sauce can be prepared up to 1 week in advance and kept in an airtight jar in the refrigerator; gently warm it before assembly if too thick. The dry crumble topping mixture (flour, oats, sugar, spices) can be stored in an airtight container in the refrigerator for 1-2 weeks, or frozen for up to 1 month. Add the cold butter and mix just before assembly. For the freshest taste and texture, assemble and bake the bars on the day you plan to serve them.