Cream butter, sugar, egg and vanilla with a mixer until fluffy. Add dry ingredients and beat just until combined. Wrap dough in a ball and cover with plastic wrap. Refrigerate for one hour.

Roll chilled dough onto a floured surface into a large rectangle.

Mix together brown sugar and milk and spread onto the dough, leaving a ½" edge all the way around. Sprinkle with cranberries and peanuts.

Roll up dough, starting with the long edge and wrap tightly with wax paper. Refrigerate overnight.