Blondies

Bahan-bahan (16 porsi)

• 1/2 cup (1 stick) unsalted butter, melted
• ½ cup (packed) dark brown sugar
• 1/3 cup granulated sugar
• 1 large egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour, (spooned into measuring cup and leveled-off)
• ½ teaspoon salt
• ¾ cup semisweet chocolate chips
• ½ cup chopped pecans ((optional))