The best recipe for chewy chocolate chip cookies was given to me by my sister-in-law's sister-in-law (how's that for alliteration?) and is from Cook's Illustrated February 1996:
2 1/2 cups flour
1/2 tsp salt
1/2 tsp baking soda
1 1/2 sticks unsalted butter, just melted, not hot
1 cup brown sugar
1/2 cup granulated sugar
1 large egg and one egg yolk
2 tsps vanilla extract
12 ounces chocolate chips
Heat oven to 325 degrees. Using electric mixer, mix butter and both sugars until light, fluffy and creamy (about 7 minutes). Meanwhile, combine flour, salt and baking soda in separate bowl, set aside. Add egg, yolk and vanilla to butter mixture, beating one minute. Add flour
mixture, beating just until combined. Stir chocolate chips into cookie batter.
Form dough into large balls, approximately 1/2 the size of a golfball (or use a large cookie scoop). Space balls evenly on ungreased dark cookie sheet (not air cushioned). Bake until just barely golden brown around edges, approximately 10 - 11 minutes. Remove to cool on the cookie sheets for 5 additional minutes before moving to rack to cool completely.
Makes approximately 3 dozen cookies.
Enjoy!