Peanut Butter Chip Cookies

This is an awesome spin on regular peanut butter chip cookies. Much more substance. These might be my new favorites!
1/2 cup unsalted butter, softened
1 1/2 cups dark brown sugar
1/2 cup white sugar
1/2 teaspoon salt
2/3 cup peanut butter
2 eggs
1 1/2 teaspoons vanilla extract
1 cup whole wheat flour
1 1/2 cups unbleached all-purpose flour
2 teaspoons baking soda
2 cups peanut butter chips

Preheat oven to 350 degrees F. Grease cookie sheets.
In a large bowl, cream together the butter, brown sugar, white sugar, salt and peanut butter. Beat in the eggs and vanilla. Combine the flours and baking soda; stir into the batter to form a dough. Mix in the peanut butter chips and walnuts. Scoop mounds of dough as large as two tablespoons onto the prepared cookie sheets. Cookies should be at least 2 inches apart.
Bake for 10 to 12 minutes in the preheated oven, until well risen and brown. Do not overbake they will firm up a little as they cool. Allow cookies to cool on baking sheet for 5 minutes before removing to a wire rack to cool completely.