Prepare the Baking Sheet: Line a baking sheet with parchment paper to prevent the brittle from sticking. Set aside.
Melt the Butter: In a medium saucepan, melt the butter or coconut oil over medium heat. Add the water and bring it to a simmer.
Add Sweetener: Once the butter has melted, stir in the natural sweetener of your choice. Stir until the sweetener dissolves completely into the butter.
Cook the Mixture: Let the mixture simmer for about 5 minutes, stirring occasionally. If you’re using a candy thermometer, ensure that the mixture reaches around 300°F (hard crack stage).
Add the Nuts: Stir in your choice of nuts and continue cooking for another 2-3 minutes, making sure they are well-coated with the sweetener mixture.
Mix in Vanilla and Baking Soda: Remove the pan from the heat and add vanilla extract and baking soda (if using). Stir quickly to combine. The baking soda will help create a lighter, airier texture.
Spread on Baking Sheet: Pour the nut mixture onto the prepared baking sheet, spreading it out evenly to your desired thickness.
Cool and Break: Allow the brittle to cool completely at room temperature. Once hardened, break it into pieces using your hands or a knife.
Serve: Enjoy your Sugar Free Nut Brittle as a snack, or serve it as a gift or party treat!