I changed the Tollhouse recipe a little bit because sometimes they were flat. The secret of great chocolate chip cookies is to use real butter and don't use a mixer. I always use a ceramic bowl and a wooden spoon. (My grandma taught me that and I always get tons of compliments when I make my cookies.)
Mix together well 2 sticks softened butter, 1 cup sugar, and 1 cup brown sugar. Add eggs one at a time until well blended. Add vanilla. Sift together 3 cups flour, 1 tsp. salt, and 1 tsp. baking soda. Add dry ingredients gradually, then add chocolate chips and walnuts. Drop by teaspoonful onto airbake cookie sheets and bake at 350 for 12 minutes. Remove onto a cooling rack. (Be sure to put cookie batter onto cooled cookie sheets).