MELT butter in large skillet. Add crumbled ramen noodles and nuts; cook, stirring constantly, until noodles are golden. Remove from pan; cool.
PLACE evaporated milk, oil, ramen seasoning packet, vinegar and sugar in blender; cover. Blend until smooth.
COMBINE salad greens, noodle mixture, green onions and dressing in large bowl; toss to coat well. Serve immediately.