choco-chip cookies

CHOCO  CHIP COOKIES
Ingredients
allpurpose flour -2 1/2 cup
baking soda   -1 tsp
salt   -1/2 tsp
butter 1 cup
sugar 3 /4 cup
brown sugar 3/4 cup
egg 1
egg yolk 1
vanilla 1 tsp
semi sweat choco chips 2 cup

beat the butter, slowly add sugars beat well ,add whole egg then egg yolk  beat well , slowly add flour mixture [flour .mix wth salt and baking soda ] mix all well with hand add choco chip mix well ,,then roll like a log wrap it in a wax paper and refrigerate for 1 hour,,take it out cut slice and bake at  200 dgr for 10 to 15 mnts