Remember the 1990s obsession with white chocolate? You’ll find both white and bittersweet chocolate in these classic cookies, and the combination is lovely. This recipe was created by former Yankee food editor Leslie Land, who passed away this past summer and is remembered fondly by many. Of this recipe, she wrote in her signature wry style, “These are old-fashioned in containing chopped chocolate instead of chips, modern in their inclusion of white chocolate. The texture is moist and slightly chewy—if you want crisp, might as well go for the recipe on the bag.”
Preheat your oven to 350° and set the racks to the middle positions, with space in between. Line 2 baking (cookie) sheets with parchment paper. Whisk the flour with the baking soda and salt and set aside.
With a standing or hand-held mixer, cream the butter, shortening, sugar, and brown sugar in a large bowl until fluffy, about 2 minutes. Add the eggs and yolk, one at a time, beating well after each. Add the syrup and vanilla and beat well. Stir in the flour mixture, then the chopped chocolate and nuts.
Drop by rounded tablespoons; then bake until lightly browned and dry on top, about 10 minutes, rotating the pans halfway through. Let cool on the baking sheets for a couple of minutes; then transfer to wire racks.