Heat oven to 180ºC . Beat butter, sugars, and peanut butter in large bowl on medium speed until light and fluffy. Blend in eggs and vanilla. Mix in flour and baking soda. Stir in chips. Drop by rounded tablesppons onto ungreased cookie sheets. Bake 10 to dozen minutes, or until lightly browned. Cool 2 minutes; remove from cookie sheets onto wire racks. from: Ed Thoma, Cooking Echo shared with you again by Peg Dietrich, 0.041237113402062