Chocolate Chip Cookies  10/10
3/4 c butter
1/2 c granulated sugar
1 c brown sugar
1 tsp vanilla
2 eggs
2 c flour
1 tsp baking soda
1 tsp salt
2 c chocolate chips

cream the butter, sugars, and vanilla until light and fluffy.  
add the eggs and beat well.  sift together the flour,baking soda, and salt.  
add to the creamed mixture.  add the chocolate pieces and blend well.  drop by teaspoonfuls onto a lightly greased baking sheet.  
bake in a moderate oven (375F) 8-10 minutes
makes about 2 dozen cookies

Source:  Hershey's 100th Anniversary:  100 years of favorites, 
Publications International, Ltd.  1994 Hershey Foods Corporation.

My changes:
Add 1 cup peanut butter when mixing the wet ingredients.  Instead of measuring the flour, add flour until you get the right consistency 
(roughly that of playdough.)  Use 1 tbsp vanilla extract.  Add 1 tbsp almond extract, 1 1/2 tsp cinnamon, a pinch of cloves, and a 
(small) pinch of nutmeg.  Vanilla or butterscotch chips are also a nice addition.