Why These Apple Crumble Bars Will Become Your Go-To Dessert

Prepare to fall in love with these Apple Crumble Bars for a multitude of reasons. They offer a perfect blend of simplicity, flavor, and versatility that makes them an instant classic in any home kitchen.

• Effortlessly Simple to Prepare: When we say these apple crumble bars are easy, we truly mean it! The process is incredibly straightforward, even for novice bakers. You simply combine the oat mixture ingredients – a single batch that ingeniously forms both the sturdy bottom layer and the irresistible crumbly topping. Next, gently toss your diced apples with a comforting blend of cinnamon and brown sugar. Finally, layer everything into a baking pan and let your oven do the rest. Minimal fuss, maximum flavor!
• Perfect for Make-Ahead Convenience: Planning a gathering or simply want to have a delightful treat ready for unexpected guests? These apple bars are an excellent make-ahead dessert. You can bake them days in advance, slice them when cooled, and have them perfectly portioned and ready to serve when the occasion arises. This convenience means one less thing to worry about at the last minute, allowing you to relax and enjoy your time.
• A Joyful Recipe for Kids to Assist With: This recipe holds a special place in our hearts as a favorite to make with children. Its uncomplicated nature makes it ideal for little helpers. Kids adore assisting with tasks like carefully cutting the apples (with supervision, of course!), stirring together the crumbly oat mixture, and assembling the layers. There are no complex techniques or fussy steps, ensuring a fun and rewarding baking experience for everyone involved.
• Incredibly Versatile for Any Occasion: Whether it’s a casual weeknight dessert, a festive holiday gathering, or a comforting treat on a chilly autumn afternoon, these Apple Crumble Bars fit seamlessly into any setting. Their comforting flavors are universally appealing, making them a crowd-pleaser for all ages.
• An Irresistible Fusion of Flavors and Textures: Each bite of these bars delivers an exquisite sensory experience. You’ll first encounter the rich, buttery crunch of the oat topping, followed by the tender, spiced, and slightly gooey apple filling. The sturdy, yet delicate, oat base completes the trio, creating a symphony of sweet, tart, and warm spice notes, all wrapped in satisfying textures.

Key Ingredients for the Perfect Apple Crumble Bars

Crafting exceptional Apple Crumble Bars starts with selecting the right ingredients. Here’s a breakdown of what you’ll need and why each component is vital:

• Apples: Fresh apples are the star of this dessert. While Granny Smith apples are a popular choice for their tartness in many apple crumble recipes, we personally prefer sweeter varieties like Gala or Fuji apples, which we always have on hand. Feel free to use your favorite baking apple – the key is a balance of flavor and texture that holds up well during baking. You can peel the apples for a smoother texture or leave the skin on for added fiber and a rustic look; we often skip peeling out of sheer laziness! In a pinch, canned apple pie filling can be used, but fresh apples yield superior flavor and a less messy bar.
• Brown Sugar: This recipe utilizes brown sugar in both the oat crumble and the apple filling. Brown sugar contributes a deeper, more molasses-rich flavor and helps create a wonderfully moist, tender crumb compared to granulated sugar. Either light or dark brown sugar will work beautifully; we typically opt for light brown sugar in this particular apple crisp bar recipe. If you find yourself without brown sugar, it’s surprisingly easy to make your own!
• Cinnamon: A quintessential spice for apple desserts, cinnamon weaves a warm, aromatic thread through both the apple filling and the oat crumble. We often measure cinnamon generously, following our hearts, because it’s truly our favorite spice! Don’t hesitate to be liberal with it if you share our passion for its comforting aroma and taste.
• Corn Starch: This is a crucial ingredient for achieving the perfect consistency in your apple layer. Corn starch acts as a thickener, ensuring the apple filling becomes wonderfully saucy and gooey, rather than watery. It helps prevent the bars from becoming too wet and falling apart. For a gluten-free alternative, arrowroot powder can be used as a 1:1 substitute.
• Lemon Juice: Freshly squeezed lemon juice is preferred for its bright, vibrant flavor, which beautifully complements and enhances the sweetness of the apples. It also serves a practical purpose by helping to prevent the apples from browning as they sit. Bottled lemon juice will also work effectively if fresh is not available.
• Quick Oats: For the best texture in these apple crumble bars, quick-cooking oats are essential. Unlike rolled or old-fashioned oats, quick oats break down slightly during baking, creating a cohesive, yet delightfully crumbly texture for both the base and topping. If you only have rolled oats on hand, a quick pulse or two in a food processor or blender will help break them down sufficiently to achieve a similar result. For a gluten-free option, simply ensure your oats are certified gluten-free.
• All-Purpose Flour: Standard all-purpose flour, spooned and leveled, forms the structural foundation of the oat layers. To make these apple bars gluten-free, a 1:1 gluten-free all-purpose flour blend can be substituted without any issues. Oat flour or almond flour can also be used, though they may slightly alter the final texture.
• Sea Salt: A touch of sea salt is vital for balancing the sweetness and enhancing the overall flavor profile of the bars. While table salt can be used, sea salt offers a more nuanced taste. If using salted butter, reduce the amount of added salt by half to avoid over-salting.
• Baking Powder: Fresh baking powder is key to giving the oat crumble topping a light, tender, and slightly airy texture. Always check the expiration date to ensure your baking powder is active for optimal results.
• Unsalted Butter: Good quality unsalted butter provides the rich, indulgent flavor and moistness that makes these bars so irresistible. If you only have salted butter, you can use it, but remember to reduce the amount of added sea salt by half. The butter should be melted for easy incorporation into the oat mixture.
• Vanilla Extract: A dash of pure vanilla extract elevates all the other flavors, adding a warm, aromatic depth that completes this delightful dessert. Opt for extract over imitation vanilla for the best possible flavor.

Step-By-Step Instructions: Crafting Your Apple Crumble Bars

Follow these detailed steps to create perfectly baked Apple Crumble Bars:

• Preparation is Key: Begin by preheating your oven to a steady 350°F (175°C). This ensures your oven is at the correct temperature for even baking.
• Mastering the Apple Filling: First, prepare your apples. You can peel them if you prefer a smoother texture in your filling; otherwise, leaving the skin on is perfectly fine for a more rustic approach. Dice the apples into small, uniform pieces to ensure even cooking and distribution throughout the bars. In a medium-sized mixing bowl, combine the diced apples with the brown sugar, cinnamon, fresh lemon juice, and corn starch. Toss everything gently until the apples are thoroughly coated. Set this mixture aside, allowing the flavors to meld while you prepare the crumble.
• Creating the Versatile Oat Crumble: In a separate, larger mixing bowl, combine all the dry ingredients for the oat crumble: the quick oats, all-purpose flour, baking powder, and sea salt. Use a whisk to thoroughly combine these ingredients, ensuring the baking powder and salt are evenly distributed. Next, add the brown sugar and a generous amount of cinnamon to this dry mixture and whisk again until everything is well incorporated. This mixture will serve as both the foundation and the delightful topping for your bars.

• Bringing the Crumble Together: Now, pour the melted butter and vanilla extract into the dry oat mixture. Stir diligently with a spatula or wooden spoon until all the dry ingredients are fully moistened and incorporated. The mixture should appear crumbly and moist, but not overly wet or greasy. It should be easy to press together without being sticky.
• Assembling Your Bars: It’s time to build your delicious apple crumble bars! Line an 8×8 inch (20×20 cm) baking pan with parchment paper, allowing the edges to overhang slightly. This will create “slings” that make it incredibly easy to lift the cooled bars out of the pan for slicing. Take approximately two-thirds of your prepared oat crumble mixture and press it very firmly and evenly into the bottom of the lined pan. The key here is to really *compress* the mixture to form a solid, sturdy base that will hold your bars together. Next, spoon the apple mixture evenly over the pressed oat layer. Be sure to leave out any excess liquid that may have accumulated at the bottom of the apple bowl to prevent a soggy base.

• The Finishing Touch: Evenly sprinkle the remaining one-third of the crumble mixture over the apple layer. Gently press this topping down into the apples; there’s no need to press firmly, just enough to ensure the crumble adheres lightly to the fruit and creates a cohesive top layer.
• Baking to Golden Perfection: Place the assembled bars into your preheated oven and bake for approximately 30-35 minutes. You’ll know they’re ready when the top crumb layer is beautifully golden brown and crisp, and the apple filling is bubbly and tender. Once baked, remove the pan from the oven and allow the bars to cool completely on a wire rack for at least an hour or two. For the absolute best results and the cleanest, easiest slicing, we highly recommend refrigerating the cooled bars for a couple of hours (or even overnight) before cutting. If you plan to enjoy these apple crumb bars with a fork and don’t mind a softer texture, you can slice them warm, but expect them to be a bit messier.

Explore More Delicious Apple Recipes

If you’ve fallen in love with these Apple Crumble Bars, you’ll surely enjoy these other apple-centric delights:

• Quick & Easy Air Fryer Apples
• Simple Apple Sage Stuffing (Perfect for Holidays!)
• Cinnamon Apple Baked Donuts with Apple Cider Glaze
• Crispy Apple Pie Egg Rolls
• Effortless Apple Dump Cake
• No-Bake Caramel Apple Cheesecake
• Wholesome Apple Pie Overnight Oats

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Apple Crumble Bars

By:
Lorie Yarro

These irresistible Apple Crumble Bars are a simple way to get your apple dessert fix with minimal effort. A buttery oat layer topped with gooey apples and crumbly oat topping is the perfect cozy treat. Eat it as finger food or serve with a big scoop of vanilla ice cream!

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Prep Time:
15 minutes

Cook Time:
35 minutes

Total Time:
50 minutes

Servings:
12

Ingredients

For Oat Bar and Crumble Topping

• 1 ½ cup quick oats, regular or gluten-free
• 1 ½ cup flour
• 1 cup unsalted butter, melted
• ½ tsp baking powder
• 1 tsp vanilla extract
• 2-3 tsp cinnamon
• 1 cup brown sugar
• ½ tsp sea salt

For Apples:

• 3 medium apples, small diced, about 3 ½ – 4 cups
• ¼ cup brown sugar, packed
• Juice of 1/2 lemon
• 1 tsp corn starch
• 1 tsp cinnamon

Instructions

1. Preheat oven to 350°F (175°C).
2. In a bowl, mix together brown sugar, lemon juice, diced apples, cinnamon, and corn starch. Toss to combine thoroughly. Set aside.
3. In a separate bowl, combine quick oats, flour, brown sugar, cinnamon, sea salt, and baking powder. Whisk these dry ingredients together until well mixed.
4. Add the melted butter and vanilla extract to the dry oat mixture. Stir until all ingredients are combined. The mixture will be somewhat crumbly, which is the desired consistency.
5. Line an 8×8 inch baking pan with parchment paper, leaving an overhang on the sides. Press two-thirds of the oat mixture firmly into the bottom of the pan to create a solid base. Evenly spread the apple mixture on top, ensuring to leave out any excess liquid from the bottom of the apple bowl.
6. Sprinkle the remaining oat mixture evenly over the apples to create the crumble topping. Place the pan in the preheated oven and bake for 30-35 minutes, or until the crumble topping is golden brown and crisp. Allow the bars to cool completely before cutting for best results. Store in an airtight container at room temperature or in the refrigerator for about 4-5 days. Enjoy!

Notes

• For easier and cleaner slices, refrigerate these apple crumble bars for several hours after cooling completely before cutting. This firms up the butter and filling.
• To make the apple layer stand out more visually, thinly slice the apples and arrange them instead of dicing. Diced apples help the bars hold together better as the crumble fills cracks.
• Ensure the bottom crumble layer is pressed very firmly into the pan. This is crucial for the bars to hold their shape and prevent crumbling when sliced.
• Feel free to add other spices like nutmeg, allspice, or a touch of pumpkin spice for additional warmth and flavor, if preferred.

Nutrition

Calories:
327
kcal

,

Carbohydrates:
44
g

,

Protein:
3
g

,

Fat:
16
g

,

Saturated Fat:
10
g

,

Polyunsaturated Fat:
1
g

,

Monounsaturated Fat:
4
g

,

Trans Fat:
1
g

,

Cholesterol:
41
mg

,

Sodium:
105
mg

,

Potassium:
150
mg

,

Fiber:
3
g

,

Sugar:
23
g

,

Vitamin A:
499
IU

,

Vitamin C:
2
mg

,

Calcium:
42
mg

,

Iron:
1
mg

Nutrition information is automatically calculated, so should only be used as an approximation.