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Prepare a large baking sheet by lining it with a silicone baking mat or parchment paper. If using parchment, lightly grease it with butter or non-stick spray. Set aside.

In a heavy-bottomed 3-quart saucepan, combine the granulated sugar, light corn syrup, and water. Stir gently over medium heat until the sugar dissolves. Avoid splashing sugar crystals onto the sides of the pan.

Once the sugar is dissolved, add the cut pieces of unsalted butter to the mixture. Insert a candy thermometer, ensuring it does not touch the bottom of the pan. Increase heat to medium-high and bring the mixture to a boil without stirring.

Continue to cook, swirling the pan occasionally if needed, until the candy thermometer registers 300°F to 310°F (hard crack stage). This will take approximately 10-15 minutes. Watch carefully to prevent burning.

Immediately remove the saucepan from the heat. Quickly stir in the roasted peanuts, baking soda, vanilla extract, and 1/2 teaspoon of the fine sea salt. The mixture will foam up and become very thick.

Pour the hot brittle mixture onto the prepared baking sheet. Working quickly, use a heat-resistant spatula or the back of a greased spoon to spread the brittle into a thin, even layer. Be cautious as the mixture is extremely hot.

Immediately sprinkle the remaining 1/2 teaspoon of fine sea salt evenly over the hot brittle. Allow the brittle to cool completely and harden at room temperature, which will take about 30-60 minutes.

Once completely cool and hard, break the brittle into irregular pieces using your hands or a blunt object. Store in an airtight container at room temperature for up to 2 weeks.


Prepare a large baking sheet by lining it with a silicone baking mat or parchment paper. If using parchment, lightly grease it with butter or non-stick spray. Set aside.

In a heavy-bottomed 3-quart saucepan, combine the granulated sugar, light corn syrup, and water. Stir gently over medium heat until the sugar dissolves. Avoid splashing sugar crystals onto the sides of the pan.

Once the sugar is dissolved, add the cut pieces of unsalted butter to the mixture. Insert a candy thermometer, ensuring it does not touch the bottom of the pan. Increase heat to medium-high and bring the mixture to a boil without stirring.

Continue to cook, swirling the pan occasionally if needed, until the candy thermometer registers 300°F to 310°F (hard crack stage). This will take approximately 10-15 minutes. Watch carefully to prevent burning.

Immediately remove the saucepan from the heat. Quickly stir in the roasted peanuts, baking soda, vanilla extract, and 1/2 teaspoon of the fine sea salt. The mixture will foam up and become very thick.

Pour the hot brittle mixture onto the prepared baking sheet. Working quickly, use a heat-resistant spatula or the back of a greased spoon to spread the brittle into a thin, even layer. Be cautious as the mixture is extremely hot.

Immediately sprinkle the remaining 1/2 teaspoon of fine sea salt evenly over the hot brittle. Allow the brittle to cool completely and harden at room temperature, which will take about 30-60 minutes.

Once completely cool and hard, break the brittle into irregular pieces using your hands or a blunt object. Store in an airtight container at room temperature for up to 2 weeks.
