Golden Oldie Peanut-Cashew Brittle

Ingredients

• 1 teaspoon pure vanilla extract
• 1 cup water
• 1 cup dry roasted cashews
• 1 cup light corn syrup
• 3 cups granulated sugar
• 1 teaspoon kosher salt
• 1/8 teaspoon cayenne pepper
• 1 stick unsalted butter
• 1 teaspoon baking soda
• 2 cups dry roasted peanuts