Ingredients (yield 25 pieces)

400g Granulated Sugar
240ml Light Corn Syrup (320g)
120ml Water
½ tsp Salt
170g Butter - cubed and softened to room temperature
260g - Dry Roasted Peanuts
1 tsp Vanilla Extract
1 tsp Baking Soda

Instructions

1.Lightly grease a large baking sheet (13×18”) with butter. Line it with parchment paper and lightly butter the paper. Make sure all of your ingredients are measured out and ready to go before you start.
2.In a medium, heavy-bottomed saucepan with tall sides (at least 4-quarts), stir gently to combine the sugar, corn syrup, water, and salt. Scrape the sides of the pot with a rubber spatula to clean any sugar off the sides. Clip a candy thermometer on the side of the pot (making sure that it doesn’t touch the bottom). Place the pan over medium heat.
3.Bring the mixture to a boil, gently stirring occasionally until the sugar is fully dissolved, for 6 to 10 minutes, until it reaches 120°C.
4.Immediately add the butter and stir constantly until it melts. Let the mixture return to a boil.
5.Cook for another 12 to 15 minutes, or until the mixture reaches 140°C, then stir in the peanuts. Cook, stirring slowly but consistently, until the temperature reaches 150°C.
6.Remove the pan from heat and immediately add the vanilla and baking soda. Stir well to combine. (The mixture will bubble up quite a bit, so don’t be alarmed.) Immediately pour the mixture onto the prepared baking sheet and quickly spread it out using a spatula. The brittle should completely cover the sheet pan and be thinner than the peanuts embedded in it.
7.Allow the brittle to cool completely, about 45 minutes, before breaking into pieces.