Peanut Butter Chocolate Chunk Walnut Cookies

1 cup unsalted butter

1 1⁄2 cups creamy peanut butter

1 cup sugar

1⁄2 cup light brown sugar

1⁄2 cup dark brown sugar

2 eggs

1 teaspoon vanilla

2 cups flour

1 1⁄2 teaspoons baking soda

1 (11 1/2 ounce) package semisweet chocolate chunks

1 cup chopped walnuts

Cream the butter and peanut butter together. Add the sugars and cream on medium speed. Add the eggs and vanilla and mix well. Combine dry ingredients and add to peanut butter mixture gradually and mix until no white remains; then add chocolate chunks and nuts. Mix well. Drop by tablespoons onto parchment lined baking sheets.Press down slightly. Bake at 350 degrees for 12-13 minutes or until golden brown. Cool on baking sheets 2 minutes; remove to wire racks to cool completely.