Blondies With Chocolate Chips and Pecans

Check 1 cup (2 sticks) unsalted butter, melted, plus more for the pan

Check 2 1/2 cups all-purpose flour, spooned and leveled

Check 1 teaspoon baking powder

Check 1/2 teaspoon kosher salt

Check 1 1/2 cups packed light brown sugar

Check 2 large eggs

Check 1 teaspoon pure vanilla extract

Check 3/4 cup semisweet chocolate chips

Check 3/4 cup chopped pecans