Old-Fashioned Peanut Brittle (Grandma-Style Christmas Candy)

There’s something about homemade peanut brittle that brings back memories of Christmas in Grandma’s kitchen. That golden candy filled with roasted peanuts, the sweet smell of caramelizing sugar, and the familiar snap when someone broke off a piece were all part of the holiday season.

Old-fashioned peanut brittle is one of those Christmas treats that never really goes out of style. It’s sweet, buttery, crunchy, and packed with peanuts.

This classic homemade peanut brittle recipe uses simple pantry ingredients and a traditional stovetop method. With a candy thermometer and a little patience, you can make beautiful golden brittle that’s perfect for Christmas candy trays and homemade holiday gifts.

Why You’ll Love This Peanut Brittle Recipe

This peanut brittle has the classic thin, crunchy texture that makes old-fashioned candy so satisfying.

The roasted peanuts add a wonderful nutty flavor, while butter and vanilla give the candy a rich finish. A little baking soda creates tiny air bubbles that help keep the brittle crisp rather than rock-hard.

It’s also an excellent make-ahead Christmas candy. Once cooled, peanut brittle stores well and can be packaged in decorative tins or little holiday treat bags.

And although candy-making can seem intimidating, this recipe becomes much easier when you prepare everything before turning on the stove.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 20 minutes
• Cooling Time: 30 minutes
• Total Time: Approximately 1 hour
• Yield: About 1 1/2 pounds
• Servings: Approximately 24 pieces
• Course: Dessert / Candy
• Cuisine: American
• Method: Stovetop
• Difficulty: Intermediate

Ingredients

• 2 cups (400 g) granulated sugar
• 1 cup (240 ml) light corn syrup
• 1/2 cup (120 ml) water
• 2 cups (about 290 g) roasted, unsalted peanuts
• 2 tablespoons (28 g) unsalted butter
• 1 teaspoon vanilla extract
• 1 teaspoon baking soda
• 1/4 teaspoon salt

Instructions

1. Prepare the Baking Sheet

Line a large rimmed baking sheet with a silicone baking mat, or lightly grease the baking sheet with butter.

Have a heat-resistant spatula ready.

Measure the butter, vanilla, baking soda, and salt before starting. Once the candy reaches the correct temperature, you’ll need to work quickly.

2. Combine the Sugar Mixture

In a large, heavy-bottomed saucepan, combine the granulated sugar, light corn syrup, and water.

Cook over medium heat, stirring gently until the sugar dissolves.

Once the mixture begins boiling, stop stirring.

Attach a candy thermometer to the side of the saucepan, making sure the tip doesn’t touch the bottom.

3. Cook the Sugar Syrup

Allow the mixture to boil until the temperature reaches approximately 250°F (121°C).

The syrup will gradually thicken and may begin developing a very light golden color.

Watch the thermometer carefully.

4. Add the Peanuts

Carefully stir the roasted peanuts into the hot sugar syrup.

Continue cooking over medium heat, stirring frequently with a heat-resistant spoon to prevent the peanuts from scorching.

Cook until the candy reaches 300°F (149°C), the hard-crack stage.

The mixture should have a rich golden-amber color.

5. Add Butter and Flavoring

Immediately remove the saucepan from the heat.

Stir in the butter, vanilla extract, and salt until combined.

Be careful because the mixture is extremely hot and may bubble when the ingredients are added.

6. Add the Baking Soda

Quickly stir in the baking soda.

The mixture will foam and become lighter in texture.

This reaction helps create the tiny air pockets that make peanut brittle easier to bite.

Do not overmix once the baking soda is incorporated.

7. Spread the Brittle

Immediately pour the hot mixture onto the prepared baking sheet.

Using a lightly greased, heat-resistant spatula, gently spread the candy into a thin, even layer.

Work quickly before it begins to harden.

Do not touch the hot candy with your hands.

8. Cool Completely

Allow the peanut brittle to cool at room temperature for approximately 30 minutes, or until completely hardened.

Avoid refrigerating the hot candy.

9. Break Into Pieces

Once fully cooled, break the brittle into irregular pieces.

You can make large pieces for holiday gift bags or smaller pieces for Christmas candy trays.

10. Serve or Store

Arrange the finished peanut brittle on a vintage candy plate or pack it into airtight holiday tins.

Store it in a cool, dry place to maintain its crisp texture.

Grandma-Style Tips for Perfect Peanut Brittle

Use a candy thermometer. Reaching 300°F is essential for brittle that hardens properly.

Prepare everything first. Candy sets quickly, so have your baking sheet and ingredients ready before cooking.

Use a heavy saucepan. A thick-bottomed pan distributes heat more evenly and helps prevent scorching.

Don’t skip the baking soda. It creates tiny bubbles that give the brittle a lighter, crisp texture.

Use roasted peanuts. They add a rich, nutty flavor. Unsalted peanuts also let you control the salt level.

Spread the candy quickly. Thin brittle is easier to break and more pleasant to eat than very thick pieces.

Keep moisture away. Humidity can make homemade brittle sticky.

Be careful with hot sugar. Candy syrup at 300°F can cause serious burns. Keep children and pets away from the work area.

Easy Peanut Brittle Variations

Salted Peanut Brittle

Use roasted salted peanuts instead of unsalted peanuts and omit the additional salt.

Pecan Brittle

Replace the peanuts with an equal amount of roasted pecans for a Southern-inspired holiday candy.

Mixed Nut Brittle

Use a combination of peanuts, almonds, and cashews for a slightly different flavor.

Extra Buttery Peanut Brittle

Increase the butter to 3 tablespoons for a richer flavor. The finished texture may be slightly more tender.

How to Store Homemade Peanut Brittle

Room Temperature: Store completely cooled brittle in an airtight container in a cool, dry place for up to 2 weeks.

Refrigerator: Refrigeration is not recommended because condensation can make the candy sticky.

Freezer: Peanut brittle can be frozen in a tightly sealed, moisture-resistant container for up to 2 months. Allow it to return to room temperature while still sealed before opening.

Holiday Gifts: Pack pieces in airtight tins or sealed candy bags. Add parchment paper between layers if needed.

For the best crunch, always protect brittle from humidity.

Frequently Asked Questions

Why Is My Peanut Brittle Chewy Instead of Crunchy?

The candy may not have reached the hard-crack stage.

For a crisp texture, cook the sugar mixture to approximately 300°F using a reliable candy thermometer.

Why Is My Peanut Brittle Sticky?

Humidity or undercooking can cause sticky brittle.

Store the finished candy in an airtight container and avoid making it on especially humid days when possible.

Can I Make Peanut Brittle Without Corn Syrup?

Corn syrup helps reduce unwanted sugar crystallization. This recipe is formulated with it, so leaving it out may produce inconsistent results.

Why Did My Peanut Brittle Turn Dark?

The sugar may have cooked too long or the heat may have been too high.

Remove the pan from the heat promptly once the mixture reaches 300°F.

Can I Use Raw Peanuts?

Yes, but raw peanuts require a different cooking approach so they roast sufficiently while the syrup cooks. For this recipe, roasted peanuts are the easiest and most reliable choice.

Can I Make Peanut Brittle Ahead of Christmas?

Absolutely! Peanut brittle is one of the best homemade Christmas candies to prepare in advance because it keeps its texture well when stored properly.

A Sweet Old-Fashioned Christmas Memory

For many families, making peanut brittle was a sign that Christmas was getting close.

There might be a saucepan bubbling on the stove, wax paper spread across the counter, and a collection of candy tins waiting to be filled.

Once the brittle cooled, someone would break it into pieces while everyone else waited for the first taste.

Some pieces were saved for Christmas gifts, and others disappeared long before the holiday arrived.

Those simple homemade traditions are what make old-fashioned Christmas candy so memorable.

Do you remember homemade peanut brittle at Christmas? Did your grandma make it with peanuts, pecans, or another favorite nut?