Although there is nothing quite like the Joy of Cooking recipe for nut brittle, this one is so incredibly convenient that I find myself using it more often than not.
Peanut Brittle (Microwave)
Makes 24 pieces
nonstick cooking spray
1 cup sugar
1/2 cup light corn syrup
1/4 cup water
1 teaspoon kosher salt
2 cups raw peanuts
1 tablespoon unsalted butter, cut into pieces
1 teaspoon pure vanilla extract
1 teaspoon baking soda
Line a rimmed baking sheet with parchment paper, sprayed with cooking spray. Set aside.
In a 2-quart large microwave-safe bowl, combine the sugar, corn syrup, water, salt and peanuts, stir until smooth. Microwave on high for 8-10 minutes, or until the mixture has thickened and is a golden color.
Remove the peanut mixture from the microwave and stir in the butter, vanilla and baking soda quickly. Immediately pour the mixture into the prepared pan, spreading with a spatula also sprayed with cooking spray. Let stand until hardened, 20 to 30 minutes. Lift the brittle off the parchment and break into 2-inch pieces.
Brittle will keep in an air-tight container at room temperature for about 5 days.