Peanut Brittle is a classic buttery and crunchy candy that no one will be able to resist munching on. It’s perfect for packaging and giving away during the holidays.
Line a 15 X 10-inch baking pan with parchment paper and set aside.
Place 1 cup sugar, ½ cup light corn syrup, and ¼ cup water in a 2-quart pot with a candy thermometer attached and bring to a boil over medium heat. Slowly stir in ½ cup butter a little at a time. Let the mixture boil, stirring occasionally.
When the sugar mixture reaches 250 degrees Fahrenheit, or when you drop a little of it into cold water it forms pliable strands, add in 1 ½ cups unsalted roasted peanuts. Stir constantly for 7-10 more minutes until the mixture reaches 300 degrees Fahrenheit, or when dropped in water it forms brittle strands. Immediately remove from heat, add 1 teaspoon vanilla and 1 teaspoon baking soda, and stir until evenly combined. Pour the brittle onto the baking sheet and spread evenly.
Let cool and set. Use a mallet or the back of a spoon to crack the brittle into pieces.