Homemade Peanut Brittle

There are some candies that feel like a holiday tradition in every crunchy bite, and this Homemade Peanut Brittle is exactly that. It is golden, buttery, and packed with roasted peanuts, with that classic shatteringly crisp texture that makes it impossible to stop at one piece. It looks impressive enough for gift tins, but it comes together with simple pantry staples and a little patience at the stove.

What I love most about this recipe is how the sugar transforms from a bubbling syrup into a glossy, amber candy that hardens into pure magic. The butter adds richness, the vanilla warms the flavor, and the baking soda creates those tiny airy bubbles that give brittle its signature light crunch. Once you make it from scratch, store-bought brittle will never quite compare.

Why You’ll Love This Recipe

This peanut brittle is made with everyday ingredients and requires no special equipment beyond a candy thermometer. It is a wonderful homemade gift, a classic holiday treat, and a fun project for anyone who loves old-fashioned candy making.

The flavor is perfectly balanced between sweet, salty, and buttery. The peanuts toast slightly in the hot syrup, deepening their flavor and giving every bite a rich, nutty crunch.

It also keeps beautifully. Stored properly, it stays crisp for weeks, making it perfect for make-ahead gifting and cookie platters.

Ingredients

• 1 cup granulated sugar

• 1/2 cup light corn syrup

• 1/4 cup water

• 1 1/2 cups roasted salted peanuts

• 2 tablespoons unsalted butter

• 1 teaspoon baking soda

• 1 teaspoon vanilla extract

• 1/4 teaspoon salt

• Optional: flaky sea salt for sprinkling

Directions

1. Line a large baking sheet with parchment paper or a silicone mat. Lightly grease it and set aside.

2. In a heavy saucepan over medium heat, combine the sugar, corn syrup, and water. Stir gently until the sugar dissolves.

3. Attach a candy thermometer to the pan. Bring the mixture to a boil without stirring, and cook until it reaches 250°F.

4. Stir in the peanuts and continue cooking, stirring occasionally, until the mixture reaches 300°F. Watch carefully so it does not burn.

5. Remove from heat and immediately stir in the butter, baking soda, vanilla, and salt. The mixture will foam and bubble.

6. Pour the brittle onto the prepared baking sheet and spread it thin with a greased spatula.

7. Sprinkle with flaky sea salt if desired. Let it cool completely at room temperature until hard.

8. Break into pieces and store in an airtight container.

Variations

• Cashew Brittle: Substitute roasted cashews for the peanuts.

• Mixed Nut Brittle: Use a blend of peanuts, almonds, and pecans.

• Spicy Peanut Brittle: Add a pinch of cayenne pepper with the salt.

• Chocolate Drizzled: Drizzle melted dark chocolate over the cooled brittle.

• Coconut Brittle: Stir in 1/2 cup toasted coconut with the peanuts.

• Maple Peanut Brittle: Replace the corn syrup with pure maple syrup for a deeper flavor.

Expert Tips

• Use a heavy saucepan. Thin pans can cause hot spots and burn the sugar.

• Do not stir once the syrup comes to a boil unless adding the peanuts. Stirring can cause crystallization.

• Use a candy thermometer. The hard crack stage at 300°F is essential for crisp brittle.

• Work quickly after adding the baking soda and vanilla. The mixture sets fast.

• Grease your spatula and baking sheet well so the brittle does not stick.

Storage and Reheating

Store peanut brittle in an airtight container at room temperature for up to 3 weeks. Keep it in a cool, dry place, as humidity can make it sticky. It does not need reheating. Freezing is not recommended, as condensation can soften the candy upon thawing.

Frequently Asked Questions

• Can I make this without a candy thermometer? It is possible but risky. A thermometer ensures the brittle reaches the hard crack stage.

• Why did my brittle turn out chewy? It likely did not reach 300°F, or it absorbed moisture from the air.

• Can I use unsalted peanuts? Yes. Add an extra 1/2 teaspoon salt to balance the flavor.

• Can I double this recipe? Yes, but use a larger saucepan and increase the cooking time slightly.

• Why did my brittle crystallize? Sugar crystals may have formed from stirring or dirty utensils. Use clean tools and avoid stirring once boiling.

What to Serve With This Dish

• A hot cup of coffee or tea

• As part of a holiday cookie and candy platter

• Packed in gift tins or cellophane bags

• Crushed over vanilla ice cream

• Alongside fresh apples for a sweet-salty contrast

Final Thoughts

This Homemade Peanut Brittle is proof that old-fashioned candy making can still feel magical. It is crisp, buttery, and packed with roasted peanut flavor, and it makes a wonderful gift or holiday treat. I hope it becomes a beloved tradition in your kitchen.