Instructions: In bowl of electric mixer, cream butter and sugars. Add eggs one at a time, beating well after each. Stir dry ingredients together. Combine starter and vanilla; add alternately with dry ingredients to sugar mixture. Spread in greased 11 1/2 x 7 1/2 x 1 1/2" pan. Sprinkle chocolate and nuts on top. Bake in preheated 350F oven 30 min.

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.