Melt the milk chocolate in a double boiler. At the same time, melt the white chocolate over double boiler.

Pour the melted milk chocolate into lined 11 x 15-inch pan. Spread to cover pan.

Immediately combine melted white chocolate with peanut butter.

Pour over milk chocolate in pan.

Swirl 2 layers with a fork in such a way as to make"tiger" stripes.

Allow to set.

Cut into small squares with sharp knife.