Lemon bars are a classic dessert that combines the brightness of lemon with the richness of a crumbly crust. In this recipe, we’re adding a twist to the traditional lemon bars by incorporating oat crumble into the crust and topping.
The result is a deliciously rustic and chewy dessert that’s perfect for any occasion. Meanwhile, you can also check out other great lemon bar recipes, such as the best lemon bars with shortbread crust, for more inspiration.

Why You’ll Love This Lemon Bars with Oat Crumble
This lemon bars recipe is a game-changer for anyone who loves a good dessert. The combination of the oat crumble crust and the lemon filling is a match made in heaven. The oat crumble adds a nice texture and flavor to the traditional lemon bars, making it a great option for those who want to try something new.
Additionally, the lemon filling is made with a short list of ingredients, including lemon zest, lemon juice, and pure maple syrup, which gives it a nice and tangy flavor.
Furthermore, the use of gluten-free flour and coconut oil makes this recipe a great option for those with dietary restrictions. As a result, this recipe is perfect for anyone who wants to make a delicious and unique dessert that’s also relatively healthy.
Base Components
The base components of this recipe include the crust, the lemon filling, and the oat crumble topping. The crust is made with gluten-free flour, coconut oil, and pure maple syrup, which gives it a nice and crumbly texture.
The lemon filling is made with lemon zest, lemon juice, and pure maple syrup, which gives it a nice and tangy flavor. The oat crumble topping is made with rolled oats, coconut oil, and pure maple syrup, which gives it a nice and crunchy texture.
Recipe
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Lemon Bars with Oat Crumble
- Total Time: 45 min
- Yield: 9 servings 1x
Description
A delicious and unique dessert that combines the brightness of lemon with the richness of a crumbly oat crust.
Ingredients
- 1 1/4 cups gluten-free all-purpose flour (160 g)
- 1 cup gluten-free rolled oats (120 g)
- 6 Tbsp coconut oil (84 g)
- 1/3 cup pure maple syrup (80 g)
- Pinch sea salt
- 1 cup full-fat canned coconut milk (240 ml)
- 1 Tbsp lemon zest (15 g)
- 1/2 cup lemon juice (120 ml)
- 5 Tbsp pure maple syrup (60 g)
- 3 Tbsp gluten-free all-purpose flour (30 g)
Instructions
- Preheat the oven to 350 degrees Fahrenheit.
- Mix together the ingredients for the crust and crumb topping in a large bowl until well-combined.
- Measure out ⅔ cup of the mixture and set it aside to be used as the crumb topping later.
- Press the rest of the crust mixture into a parchment-lined 8” x 8” baking pan in an even layer.
- Bake the crust for 15 minutes, just until the edges begin to turn slightly golden brown.
- While the crust is baking, prepare the lemon filling by adding all of the ingredients to a small saucepan and whisking together while heating over medium-high heat.
- Continue whisking constantly until everything is well combined and the mixture is thick and creamy.
- Once the crust is out of the oven, immediately pour the lemon filling over the crust and spread it into an even layer.
- Crumble the reserved crumb mixture over top of the lemon filling.
- Bake the lemon bars for 15 to 20 minutes or until it appears as though the filling has set up and the crumble topping is slightly crispy.
Notes
- Let the lemon bars cool to room temperature before slicing and serving.
- Cover the baking dish with plastic wrap or foil and refrigerate for up to 5 days.
- Freeze for up to 2 months.
- Prep Time: 10 min
- Cook Time: 35 min
- Category: Main Course
- Method: Baked
- Cuisine: American
Nutrition
- Calories: 307 kcal
- Sugar: 16 g
- Sodium: 10 mg
- Fat: 14 g
- Carbohydrates: 42 g
- Fiber: 2 g
- Protein: 3 g
Ingredients and Substitutions
The ingredients needed for this recipe include gluten-free flour, rolled oats, coconut oil, pure maple syrup, sea salt, full-fat canned coconut milk, lemon zest, and lemon juice. These ingredients can be easily found at most grocery stores, and they’re relatively affordable.
If you don’t have any of these ingredients, you can easily substitute them with other ingredients. For example, you can use regular flour instead of gluten-free flour, or you can use honey instead of pure maple syrup.
Sauce and Seasonings
The sauce and seasonings used in this recipe include lemon zest, lemon juice, and pure maple syrup. These ingredients give the lemon filling a nice and tangy flavor, and they’re essential to the recipe. You can adjust the amount of lemon zest and lemon juice to your taste, and you can also add other seasonings such as vanilla extract or cinnamon.

How to Make Lemon Bars with Oat Crumble
To make this recipe, start by preheating your oven to 350 degrees Fahrenheit. Then, mix together the ingredients for the crust and crumb topping in a large bowl until well-combined. The mixture should be thick and resemble regular cookie dough. If it appears too crumbly, add 1 to 2 tablespoons of additional melted coconut oil.
Measure out ⅔ cup of the mixture and set it aside to be used as the crumb topping later. Press the rest of the crust mixture into a parchment-lined 8” x 8” baking pan in an even layer. Bake the crust for 15 minutes, just until the edges begin to turn slightly golden brown.
While the crust is baking, prepare the lemon filling by adding all of the ingredients to a small saucepan and whisking together while heating over medium-high heat. Continue whisking constantly until everything is well combined and the mixture is thick and creamy. This should only take about 1 to 3 minutes.
Once the crust is out of the oven, immediately pour the lemon filling over the crust and spread it into an even layer. Crumble the reserved crumb mixture over top of the lemon filling.
Bake the lemon bars for 15 to 20 minutes or until it appears as though the filling has set up and the crumble topping is slightly crispy. For more information on how to make the perfect lemon bars, you can check out this recipe for thick and creamy lemon bars.
Pro Tips for Success
To ensure that your lemon bars turn out perfectly, make sure to follow a few pro tips. First, make sure to use high-quality ingredients, such as fresh lemon zest and real pure maple syrup. Second, don’t overmix the crust and crumb topping mixture, as this can cause it to become tough and dense. Third, make sure to bake the crust and lemon bars for the right amount of time, as this can affect the texture and flavor of the final product. Finally, let the lemon bars cool to room temperature before slicing and serving, as this will help them to set up properly. Additionally, you can also make these lemon bars in a 9×13 pan, as shown in this recipe for lemon bars in a 9×13 pan.

Flavor Variations
There are several ways to vary the flavor of this lemon bars recipe. One option is to add a teaspoon of vanilla extract to the lemon filling, which gives it a nice and creamy flavor. Another option is to use lime zest and lime juice instead of lemon zest and lemon juice, which gives the lemon bars a nice and tangy flavor. You can also add other ingredients, such as chopped nuts or dried fruit, to the crust and crumb topping mixture to give it a nice texture and flavor.
Serving Suggestions
These lemon bars are perfect for serving at any occasion, from a casual dinner party to a special event. You can serve them on their own, or you can top them with a scoop of ice cream or a dollop of whipped cream. You can also serve them with a side of fresh fruit, such as strawberries or blueberries, which gives them a nice and refreshing flavor.
Storage and Freezing Instructions
To store these lemon bars, simply cover them with plastic wrap or foil and refrigerate them for up to 5 days. You can also freeze them for up to 2 months, which is perfect for making them ahead of time. To freeze, simply place the lemon bars in a single layer on a baking sheet and freeze until solid. Then, transfer them to a freezer-safe bag or container and store in the freezer. To thaw, simply place the lemon bars in the refrigerator overnight or thaw at room temperature for a few hours.
Nutrition Facts per Serving
| Calories | Fat | Carbs | Protein | Fiber | Sugar | Sodium |
|---|---|---|---|---|---|---|
| 307 kcal | 14 g | 42 g | 3 g | 2 g | 16 g | 10 mg |
FAQs About Lemon Bars with Oat Crumble
What is the best way to store lemon bars?
The best way to store lemon bars is to cover them with plastic wrap or foil and refrigerate them for up to 5 days. You can also freeze them for up to 2 months.
Can I make lemon bars ahead of time?
<p.Yes, you can make lemon bars ahead of time. Simply prepare the crust and lemon filling, then assemble and bake the lemon bars. Let them cool to room temperature, then cover and refrigerate or freeze until ready to serve.
Can I use a different type of flour?
<p.Yes, you can use a different type of flour, such as almond flour or coconut flour, but keep in mind that it may affect the texture and flavor of the final product.
Final Thoughts
In conclusion, this lemon bars with oat crumble recipe is a delicious and unique dessert that’s perfect for any occasion. The combination of the oat crumble crust and the lemon filling is a match made in heaven, and the use of gluten-free flour and coconut oil makes it a great option for those with dietary restrictions.
With its simple ingredients and easy-to-follow instructions, this recipe is perfect for anyone who wants to make a delicious and healthy dessert. So go ahead, give it a try, and enjoy the delicious taste of lemon bars with oat crumble!







