Chocolate Chip Cookie Brittle

Bahan-bahan (30 porsi)

• 1 cup (2 sticks) butter, (at room temperature)
• 1 cup granulated white sugar
• 1 1/2 teaspoons vanilla extract
• 1 teaspoon salt
• 2 cups all purpose flour
• 12 ounces (2 cups) chocolate chips (milk chocolate or semi sweet), (divided)
• 1 cup chopped pecans or walnuts