my favorite chocolate chip cookies

Ingredients For my favorite chocolate chip cookies

• 2/3 c

  butter,softened
• 2/3 c

  shortening
• 1 c

  sugar
• 1 c

  brown sugar, firmly packed
• 2

  eggs
• 2 tsp

  vanilla
• 3 c

  all purpose flour
• 1 tsp

  baking soda
• 1 tsp

  salt
• 12 oz

  package of chocolate chips
• 1 c

  walnuts (optional)