Enjoy a zesty delight with our Lemon Crumb Bars, featuring a luscious lemon filling sandwiched between layers of oatmeal crumb. Made with fresh lemons, butter, oats, flour, and sweetened condensed milk, these bars are the perfect blend of tart and sweet. Ideal for dessert or a special treat!
Every recipe has its story, and my Lemon Crumb Bars are no exception. Born from a sunny afternoon craving and a surplus of lemons in the kitchen, these bars transformed a lazy day into a whirlwind of baking adventure. The aroma of zesty lemon and sweet, caramelized oats filled the air as I experimented with the perfect balance of tangy and sweet. After several trials and a lot of taste testing (the best part, obviously), these Lemon Crumb Bars emerged as a household favorite, reminding us of sun-drenched days and carefree laughter.
Why You’ll Love These Lemon Crumb Bars
Our Lemon Crumb Bars are more than just a treat; they’re a sensory experience. Here’s why you’ll love making and devouring them:
- Exceptional Flavor Balance: The tartness of fresh lemons perfectly complements the sweetness of the condensed milk and brown sugar.
- Textural Delight: With a crumbly oat base and topping, plus a creamy filling, each bite offers a satisfying crunch followed by smooth lemony bliss.
- Simple Ingredients: Made with everyday pantry staples, these bars are a testament to the magic that happens when simple ingredients are combined with a little culinary creativity.
- Versatility: Perfect for all occasions, from summer picnics to festive winter gatherings, adapting to your needs and tastes.
Ingredients Notes
Each ingredient in our Lemon Crumb Bars plays a pivotal role in crafting the perfect dessert. Here’s a little insight into how they come together:
- Unsalted Butter: Provides a rich, buttery base without overpowering the lemon flavor. Melting the butter ensures a smooth mixture for the crumb base.
- Brown Sugar: Adds a depth of flavor with its molasses notes, pairing wonderfully with the zestiness of the lemon.
- Oats: Old-fashioned rolled oats give the bars a hearty texture, making the crumb topping deliciously crunchy.
- Lemons: The zest and juice of fresh lemons are crucial for that bright, citrusy kick that defines these bars.
- Sweetened Condensed Milk: Acts as the creamy, sweet counterpart to the tart lemon juice, creating a silky smooth filling.
WANT TO SAVE THIS RECIPE?
How To Make Lemon Crumb Bars
Making Lemon Crumb Bars is an enjoyable and straightforward process. Let’s break it down into detailed steps:
- Prepare Your Pan and Oven: Start by preheating your oven and lining your baking pan with parchment paper. This setup ensures that your bars are easy to remove and perfectly baked.
- Create the Crumb Mixture: Melt butter and mix with brown sugar, baking powder, salt, oats, and flour. This creates a deliciously crumbly base and topping.
- Bake the Base: Press most of the crumb mixture into the pan and bake until golden. This forms a sturdy base for your lemon filling.
- Mix the Lemon Filling: While the base bakes, mix lemon zest, juice, sweetened condensed milk, and salt. This mixture is vibrant and creamy, ready to layer over your base.
- Assemble and Bake: Pour the filling over the baked base, sprinkle with reserved crumb topping, and bake until set. This step fuses all layers into a cohesive, flavorful dessert.
- Cool and Serve: Allow the bars to cool, then chill if desired for a firmer texture. Cut into squares and enjoy!
Storage Options
Lemon Crumb Bars can be stored at room temperature for a day, making them perfect for events. For longer storage, keep them in an airtight container in the refrigerator for up to a week. For a longer treat, they can be frozen, well-wrapped, for up to three months. Simply thaw in the refrigerator before serving to enjoy a refreshing lemon treat anytime.
Variations and Substitutions
Adaptability is key in baking, and these Lemon Crumb Bars offer plenty of room for tweaks:
- Gluten-Free Flour: Swap in your favorite gluten-free blend to cater to dietary restrictions without compromising on taste.
- Vegan Options: Use coconut oil or vegan butter instead of dairy butter, and a vegan condensed milk alternative.
- Add Nuts: Mix chopped almonds or walnuts into the crumb mixture for an added crunch and nutty flavor.
- Berry Twist: Add a layer of raspberry or blueberry preserves under the lemon filling for a fruity twist on the classic lemon bars.
Each of these elements enhances the charm of the Lemon Crumb Bars, making them a delightful project for any baker. Enjoy experimenting and indulging in your delicious creation!
Lemon Crumb Bars
Ingredients
- 8 tablespoons 1 stick unsalted butter
- 3/4 cup packed dark or light brown sugar
- 3/4 teaspoon baking powder
- 3/4 teaspoon kosher salt divided
- 1 1/4 cups old-fashioned rolled oats or quick-cooking oats
- 1 cup all-purpose flour
- 2 large or 3 medium lemons
- 1 14-ounce can sweetened condensed milk
Instructions
- Preparation of Baking Equipment and Preheating: Position a rack in the middle of the oven. Preheat the oven to 350 degrees Fahrenheit (177 degrees Celsius). Line an 8×8-inch baking pan with two sheets of parchment paper, placed perpendicularly. Ensure the sheets extend at least one inch over all four sides to facilitate easy removal of the bars.
- Melting the Butter: Cut the butter into eight pieces and place them in a large, microwave-safe bowl. Melt the butter in the microwave using 20-second intervals, checking frequently, until mostly melted (approximately 40 to 60 seconds total). Alternatively, the butter may be melted on the stovetop and then transferred to a bowl.
- Preparing the Crumb Mixture: To the melted butter, add the brown sugar, baking powder, and 1/2 teaspoon of the kosher salt. Stir to blend thoroughly. Incorporate the oats and all-purpose flour, mixing with a flexible spatula until the mixture is uniform and no dry spots remain. Reserve one cup of this crumb mixture for later use as the topping.
- Baking the Base Layer: Transfer the remaining crumb mixture to the prepared baking pan. Press the mixture into a compact, even layer using the back of a spoon or your hands. Bake in the preheated oven until it is fragrant and lightly browned, about 12 to 14 minutes. Remove the pan from the oven and set aside.
- Mixing the Lemon Filling: Using the same bowl (no need to wash it), finely grate the zest of the lemons to yield about 2 tablespoons of zest. Juice the zested lemons to obtain 1/2 cup of lemon juice. Combine the lemon zest, lemon juice, sweetened condensed milk, and the remaining 1/4 teaspoon kosher salt in the bowl. Whisk until the mixture is smooth.
- Assembling and Baking the Filled Bars: Pour the lemon filling over the hot, pre-baked crust. Evenly sprinkle the reserved cup of crumb mixture over the filling. Return the pan to the oven and bake until the edges are well-set and lightly browned, about 22 to 24 minutes.
- Cooling and Cutting the Bars: Transfer the baking pan to a wire rack and allow the bars to cool completely, approximately 1 1/2 hours. If a firmer filling is desired, the cooled bars can be refrigerated for 30 minutes. Using the overhanging parchment as handles, lift the slab of bars from the pan and place it on a cutting board. Cut into 12 equal pieces.
