Heat oven to 375 degrees. Grease a 9" round cake pan. Separate biscuits and dip one at a time in melted margarine. Then coat entirely into the cinnamon-sugar mixture. Overlap the biscuits around outer circle of pan. Overlap 5 around the inner circle to fill pan. Pour leftover margarine and cinnamon-sugar mixture over top. Sprinkle with chopped nuts. Bake 25 to 30 minutes.
Allow to stand 5 minutes. Before serving, turn pan over onto plate.