This Cookie Monster recipe is similar but not identical to the original Toll House (wiki) recipe which I carry in my head (and which can be found on the back of almost any brand of chocolate chips you find in the grocery store (see bottom of post for the recipe).
2 1/4 cups all-purpose flour
1 teaspoon baking soda
1 teaspoon salt
1 cup (2 sticks, 1/2 pound) butter, softened
3/4 cup granulated [white] sugar
3/4 cup packed brown sugar
1 teaspoon vanilla extract
2 cups (12-ounce package) Semi-Sweet Chocolate Morsels
1 cup chopped nuts
Combine flour, baking soda and salt in small bowl. Beat butter, granulated sugar, brown sugar and vanilla in large mixer bowl. Add eggs one at a time, beating well after each addition; gradually beat in flour mixture. Stir in morsels and nuts. Drop by rounded tablespoon onto ungreased baking sheets.
Bake in preheated 375-degree [Fahrenheit] oven for 9 to 11 minutes or until golden brown. Let stand for 2 minutes; remove to wire racks to cool completely.
PAN COOKIE VARIATION: Prepare dough as above. Spread into greased 15"x10" jelly-roll pan. Bake in preheated 375-degree [Fahrenheit] oven for 20 to 25 minutes or until golden brown. Cool in pan on wire rack.
FOR HIGH ALTITUDE BAKING (>5,200 feet): Increase flour to 2 1/2 cups; add 2 teaspoonfuls water with flour; reduce both granulated sugar and brown sugar to 2/3 cup each. Bake at 375 degrees Fahrenheit, drop cookies for 8 to 10 minutes and pan cookies for 17 to 19 minutes.