Lemon Crumb Bars Recipe
These Lemon Crumb Bars combine a buttery oat crust with a tangy, creamy lemon filling topped with a sweet crumbly layer. Perfectly balanced with fresh lemon juice and zest, these bars are a delightful treat for any dessert occasion, offering a refreshing twist on traditional crumb bars.
- Author: Lily
- Prep Time: 15 minutes
- Cook Time: 37 minutes
- Total Time: 52 minutes
- Yield: 16 bars (4x4 grid from 8x8 pan) 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Crust and Crumble
- 1 ¼ cups all-purpose flour
- 1 ¼ cups old-fashioned rolled oats
- ½ teaspoon salt
- ½ teaspoon baking soda
- ½ cup granulated sugar
- ½ cup packed light brown sugar
- ¾ cup unsalted butter, melted
- 1 teaspoon vanilla extract
Lemon Filling
- 1 14 oz can sweetened condensed milk
- 2 tablespoons finely grated lemon zest
- ½ cup fresh lemon juice
- 2 large egg yolks
Optional Topping
- White chocolate, for dipping (optional)
- Preheat and Prepare Pan: Preheat your oven to 350°F (175°C) and grease an 8×8-inch baking pan thoroughly with baking spray to prevent sticking.
- Mix Dry Ingredients: In a large bowl, combine the all-purpose flour, rolled oats, salt, and baking soda, ensuring they are evenly distributed.
- Add Sugars: Stir in the granulated sugar and packed light brown sugar to the dry mixture for sweetness and texture.
- Incorporate Butter and Vanilla: Mix the melted unsalted butter with vanilla extract and add this liquid mixture to the dry ingredients. Stir until a cohesive crumbly dough forms.
- Form Crust Base: Press half of this crumbly mixture firmly into the bottom of the prepared pan, creating an even layer that will become the crust.
- Bake Crust: Bake the crust in the preheated oven for 15 minutes until it starts to set and lightly golden.
- Prepare Lemon Filling: While the crust bakes, whisk together the sweetened condensed milk, finely grated lemon zest, fresh lemon juice, and egg yolks until smooth and creamy.
- Assemble Bars: Once the crust is baked, pour the lemon filling evenly over the crust. Then, sprinkle the remaining crumb mixture atop the lemon layer evenly to create the crumbly topping.
- Bake Bars: Return the pan to the oven and bake for an additional 20–22 minutes until the bars are lightly golden and the lemon filling is set but still slightly soft.
- Cool and Chill: Allow the bars to cool completely on a rack, then refrigerate until firm to ensure clean slicing and optimal texture.
- Slice and Serve: For best results, chill thoroughly or briefly freeze before cutting to prevent the filling from oozing out, resulting in neat, easy-to-handle bars.
- Optional Decoration: For extra indulgence, dip the bottom half of frozen bars in melted white chocolate. Place on wax paper and refrigerate until the chocolate hardens before serving.
Notes
- Chilling the bars before slicing helps achieve cleaner cuts and avoids dripping lemon filling.
- If white chocolate dipping is desired, make sure bars are fully frozen to prevent melting and mess.
- Use fresh lemon juice and zest for the brightest citrus flavor.
- These bars can be stored in the refrigerator for up to 5 days in an airtight container.
Keywords: lemon bars, crumb bars, lemon dessert, citrus bars, baked lemon bars, oat crumb topping