Sieve flour, baking soda and salt together and keep aside.
Now mix butter, sugar, brown sugar and vanilla with a electric blender. Add eggs one at a time and blend them together, add the flour mixture little by little and keep on mixing till well blended. Mix the chocolate morsels.
Now spoon the cookie dough on a greased tray and bake in a preheated oven at 375 degree Fahrenheit for 9 to 10 minutes till cookies are browned. Let cookies cool.