2 1/4 cups all-purpose flour (spooned and leveled)
1/2 teaspoon baking soda
3/4 teaspoon fine salt
2 sticks unsalted butter, room temperature
1/2 cup granulated sugar
3/4 cup packed light-brown sugar
2 teaspoons pure vanilla extract
2 large eggs
2 cups semisweet chocolate chips (12 ounces)
1 cup chopped pecans
Preheat oven to 350 degrees. Whisk together flour, baking soda, and salt. In a medium bowl, using a mixer, beat butter and sugars until pale and fluffy, 4 minutes. Add vanilla and eggs and beat until combined. Add flour mixture and beat until just combined. Mix in chocolate chips and pecans.
Drop dough in 2-tablespoon-size balls on parchment-lined baking sheets about 2 inches apart. Bake until cookies are golden around the edges but still soft in the center, 12 to 14 minutes. Let cool on sheets 1 to 2 minutes, then transfer to wire racks and let cool completely.