Crisp, buttery, salty, and sweet all at once

Few candies are as deeply nostalgic and satisfying as a well-made peanut brittle. The magic happens when sugar and corn syrup are cooked to a precise hard crack stage, creating a glassy, amber base that shatters cleanly with every bite. Roasted peanuts add a savory, nutty contrast to the sweet caramel backdrop, while butter enriches the flavor and baking soda creates the signature airy, slightly porous texture that keeps it from being too dense or tooth-breaking. The result is a candy that is crisp, buttery, salty, and sweet all at once. Serve as a holiday gift, a dessert board accent, or simply on its own as a satisfying treat.

Ingredients

• 2 cups granulated white sugar
• 1 cup light corn syrup
• 1/2 cup water
• 2 cups raw or dry-roasted salted peanuts
• 2 tablespoons unsalted butter
• 1 teaspoon pure vanilla extract
• 1 1/2 teaspoons baking soda
• 1/2 teaspoon fine sea salt (if using unsalted peanuts)

Directions

1. Before you begin cooking, prepare your workspace. Grease a large rimmed baking sheet generously with butter or spray with nonstick cooking spray and set aside. Have all ingredients measured and ready to go, as the process moves quickly once the sugar reaches temperature.
2. In a heavy-bottomed medium saucepan, combine the sugar, corn syrup, and water over medium heat. Stir until the sugar dissolves.
3. Clip a candy thermometer to the side of the pan. Bring the mixture to a boil without stirring. Cook until it reaches 250°F (121°C), the soft ball stage.
4. Add the peanuts and stir continuously with a wooden spoon or heat-safe silicone spatula. Continue cooking and stirring until the mixture reaches 300°F to 310°F (149°C to 154°C), the hard crack stage. The mixture will turn a deep golden amber color.
5. Remove the pan from heat immediately. Working quickly, stir in the butter and vanilla extract until the butter is fully melted and incorporated.
6. Add the baking soda and stir vigorously. The mixture will foam up dramatically. This is expected and essential to the texture.
7. Immediately pour the mixture onto the prepared baking sheet. Do not scrape the pan bottom.
8. Using two forks or the back of a greased spatula, quickly spread and stretch the brittle as thin as possible before it sets. Work fast as it hardens within minutes.
9. Allow the brittle to cool completely at room temperature, about 30 to 45 minutes.
10. Once fully hardened, break into irregular pieces by hand or with the handle of a butter knife.
11. Store in an airtight container at room temperature, layered between sheets of parchment or wax paper, for up to three weeks.

Tips and variations

• A candy thermometer is not optional for this recipe. Guessing the temperature leads to brittle that is either sticky or too hard to eat safely.
• Do not make brittle on a humid or rainy day. Moisture in the air prevents the candy from setting properly and causes stickiness.
• If you do not have a candy thermometer, drop a small amount of the syrup into a glass of cold water. At the hard crack stage it will form rigid, brittle threads that snap cleanly.
• Stir constantly once the peanuts are added to prevent burning on the bottom of the pan.
• For extra depth of flavor, use a mix of salted and unsalted peanuts and add a light sprinkle of flaky sea salt over the top just after pouring.
• Substitute cashews, almonds, pecans, or macadamia nuts for the peanuts for elegant variations.
• Add 1/4 teaspoon of cayenne pepper with the baking soda for a sweet and spicy version.
• Stir in 1/2 cup of shredded coconut along with the peanuts for a tropical twist.
• Drizzle cooled brittle with dark chocolate for a more indulgent presentation.
• The baking soda must be fresh and active for the brittle to achieve its light, airy texture. Test it if it has been open for a while.

©2026 S. Mottet bloomhearty.com writing, creation, and design