Low-carb coconut lime bars are the ultimate guilt-free dessert for lime lovers. These bars combine a buttery almond crust with a tangy-sweet lime-coconut filling, all topped with toasted coconut for a tropical crunch. Naturally gluten-free and made with wholesome ingredients, they’re low in net carbs and packed with vibrant flavor. Whether you’re following a keto diet or just seeking a healthier treat, these bars deliver indulgence without compromise.

We designed this recipe to show you that healthy desserts can still be deeply satisfying. Our team of nutritionists tested multiple versions to strike the perfect balance of creamy texture and bright, citrusy flavor—all while keeping the carb count low. These bars are perfect for a refreshing pick-me-up or sharing at gatherings where everyone can enjoy a healthier, delicious option.

Why This Low-carb Coconut Lime Bars Is Good for You

Low-carb and keto-friendly: Each bar contains just 5.1g net carbs, making it ideal for those managing blood sugar or on a low-carb diet.
Gluten-free and grain-free: Almond and coconut flours replace traditional wheat flour, offering a nutrient-dense, gluten-free alternative.
Rich in healthy fats: Ingredients like coconut milk and almond flour contribute satiating fats that keep you full longer.
Refined sugar-free: Natural sweeteners like Swerve add sweetness without spiking blood sugar levels.
Vitamin C boost: Lime juice provides immune-supporting antioxidants and a zesty bite.

Wholesome Ingredients for This Low-carb Coconut Lime Bars

Each ingredient in this healthy coconut lime bars recipe was carefully chosen for both nutrition and flavor. Here’s a closer look at the key components:

Almond flour: The base of the crust, almond flour is rich in protein, vitamin E, and healthy fats. It’s also naturally gluten-free. For a nut-free option, try substituting sunflower seed flour.
Coconut flour: Adds structure and fiber to the crust while enhancing the tropical flavor. Use sparingly, as coconut flour is highly absorbent.
Lime juice: Freshly squeezed lime juice is the star of the filling, adding tangy brightness and vitamin C. Avoid bottled lime juice for the best flavor.
Coconut milk: This creamy ingredient enriches the filling while keeping it dairy-free. Look for full-fat, unsweetened coconut milk for the best results.

Pro tip: Use the freshest possible ingredients, especially lime juice and zest, to get the boldest, most vibrant flavors.

Low-carb Coconut Lime Bars Recipe Details

Servings: 12 bars
Prep Time: 25 minutes
Cook Time: 25 minutes
Total Time: 3 hours 5 minutes

Low-carb Coconut Lime Bars Ingredients

For the crust:
1 cup finely ground almond flour
¼ cup low-calorie natural sweetener (such as Swerve®)
2 tablespoons coconut flour
1 teaspoon lime zest
¼ teaspoon salt
3 tablespoons butter, softened
For the filling:
1 cup lime juice
½ cup coconut milk
½ cup low-calorie natural powdered sweetener (such as Swerve®)
1 tablespoon butter, melted
1 teaspoon lime zest
5 large eggs, beaten
For the topping:
2 tablespoons unsweetened shredded coconut
½ tablespoon lime zest, or to taste

How to Make Low-carb Coconut Lime Bars

Preheat the oven to 350°F (175°C) and grease an 8-inch square baking dish.
Make the crust: In a large bowl, combine almond flour, sweetener, coconut flour, lime zest, and salt. Add softened butter and mix with a fork until crumbly. Press the mixture evenly into the prepared baking dish.
Bake for 10–15 minutes, or until the crust is lightly golden. Remove from the oven but leave the oven on.
Prepare the filling: In a medium saucepan over medium heat, whisk together lime juice, coconut milk, powdered sweetener, melted butter, and lime zest. While whisking constantly, slowly add the beaten eggs. Cook for 5–10 minutes until the filling thickens slightly (do not boil).
Pour the filling over the pre-baked crust and return the dish to the oven. Bake for another 10–15 minutes, or until the center of the filling is set.
Toast the coconut: While baking, toast the shredded coconut in a skillet over medium heat for 2–3 minutes, stirring frequently to prevent burning. Toss with lime zest once toasted.
Let the bars cool for 15 minutes at room temperature before refrigerating for 2 hours to set fully.
Sprinkle the toasted coconut mixture on top before slicing into 12 bars. Serve chilled and enjoy!

How to Customize This Low-carb Coconut Lime Bars for Your Diet

Make it vegan: Replace eggs with a blend of silken tofu or aquafaba for a plant-based alternative.
Nut-free option: Substitute almond flour with sunflower seed flour for a similar texture.
Higher protein: Add a scoop of unflavored protein powder to the crust or filling.
Lower calorie: Use light coconut milk instead of full-fat and slightly reduce the butter in the crust.
Keto upgrade: Add a dash of MCT oil to the filling for an extra dose of healthy fats.