Preheat oven to 350

Sift the flours, baking soda and salt together.

Cream butter, peanut butter, and sugars till light and fluffy.

Add vanilla and egg cream some more (about 3 more minutes).

Stir in flour mixture by hand (don't overwork).

Drop heaping tablespoons of batter on the lined cookie sheet, about 2 apart. Flatten with floured fingers to 2 round.

Bake till puffed and golden (about 12 - 14 minutes)
cool on wire rack.

Cream confectioners sugar, butter and peanut butter until smooth.

I always sift my confectioner's sugar as it tends to get lumpy (I buy at a bulk food store, and it will sit a bit here).

Add cream and cream till smooth and fluffy.
Stir in nuts (they should be unsalted) and the chocolate chips

Spread some filling on a cookie, and press top onto it.