Alexis Stewart's Brown Sugar Chocolate Chip Cookies

1 pound (4 sticks) unsalted butter, room temperature, plus more for baking sheets
3 cups packed light-brown sugar
1 cup granulated sugar
4 large eggs
2 teaspoons pure vanilla extract
3 1/2 cups all-purpose flour
1 1/2 teaspoons salt
2 teaspoons baking soda
1 1/2 cups best quality chocolate chips

Preheat oven to 375 degrees. Line two baking sheets with Silpat baking mats or parchment; set aside. Cream butter until smooth; add sugars, and beat until smooth. Beat in eggs and vanilla. Into a large bowl, sift together dry ingredients. Slowly beat dry ingredients into wet mixture. Fold in chocolate chips.

Drop 2 to 3 tablespoons dough per cookie onto prepared baking sheets; space dough at least 2 inches apart to allow for spreading. Bake until golden, 8 to 10 minutes. Remove cookies from baking sheets, and allow to cool on baking racks.

Makes 50 4-inch cookies