Sugar-Free Lemon Bars

Sugar-Free Lemon Bars Tangy, Buttery & Perfectly Keto & Diabetic-Friendly

These Sugar-Free Lemon Bars deliver everything you love about classic lemon bars — a crisp, buttery shortbread crust and a bright, silky-smooth lemon filling — but without the sugar or carb load. Dust them with powdered sweetener for that beautiful bakery finish. They’re the perfect refreshing treat for keto, low-carb, or diabetic lifestyles!

Why You’ll Love This Recipe

• Classic tangy lemon flavor with zero added sugar
• Buttery almond-flour crust that holds up perfectly
• Only 3–4g net carbs per bar
• Make-ahead and freezer-friendly
• Impressive enough for guests or holidays

Ingredients (makes 16 bars)

Crust:

• 2 cups (200g) blanched almond flour
• ⅓ cup powdered erythritol or monk fruit sweetener
• ½ cup (113g) melted butter
• 1 tsp vanilla extract
• Pinch of salt

Lemon Filling:

• 4 large eggs
• ¾–1 cup powdered erythritol or allulose (adjust to taste)
• ½ cup fresh lemon juice (about 3–4 lemons)
• 2 tbsp lemon zest
• ¼ cup almond flour (or 1 tbsp coconut flour for thickening)
• Optional: ½ tsp xanthan gum (for extra firmness)

Topping:

• Powdered erythritol or monk fruit (for dusting)

Instructions

1. Preheat oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper.
2. Make the crust: Mix almond flour, sweetener, melted butter, vanilla, and salt until it resembles wet sand. Press firmly and evenly into the bottom of the pan.
3. Bake crust for 12–15 minutes until lightly golden. Remove and let cool slightly.
4. Make the filling: In a bowl, whisk eggs, sweetener, lemon juice, lemon zest, almond flour (or coconut flour), and xanthan gum (if using) until completely smooth.
5. Pour the filling over the warm crust and return to the oven.
6. Bake for 18–25 minutes until the center is just set (it should still have a slight jiggle).
7. Cool completely in the pan, then refrigerate for at least 2 hours (or overnight) until firm.
8. Cut into 16 squares and dust generously with powdered sweetener right before serving.

Storage Tips

Store in an airtight container in the refrigerator for up to 7 days. These bars also freeze beautifully — wrap individually and freeze for up to 3 months. Thaw overnight in the fridge.

Nutritional Information (per bar, based on 16 bars)

• Calories: ~145
• Fat: 13g
• Total Carbs: ~5g
• Fiber: ~2g
• Net Carbs: ~3g
• Protein: 4g

Macros are approximate and may vary slightly based on brands and exact sweetener used. Always test your personal blood sugar response.