Thanks to Sherry for sending in this idea!
This is really easy. No oven involved, just the microwave.
Melt margarine and choc chips together for 1 min in microwave, stir and microwave for additional 1 min until melted and smooth (make sure you stir before you put it on for more time, as stirring often finishes off the melting process).
Put marshmallows and nuts in a large bowl; stir in chocolate/margarine mixture.
Tear five 9-inch sheets of waxed paper and sprinkle each generously with coconut.
Divide dough into fifths and place each fifth on a sheet of waxed paper.
Roll tightly into 2-inch diameter logs and refrigerate overnight.
Before serving, unwrap from waxed paper and cut into 1/2" slices.