Benzema produced an outrageous backheel to set up Casemiro for the only goal of the game to send Real clear at the top of the table.
Real icon Butragueno said: "It is one of the plays of the season. It has been so spectacular ... It gives an idea of the talent of the player in a moment that he has his back to see how Casemiro arrives.
"I found it sensational, a spectacular action.
"It is a play surprising because it was difficult to wait for it to be solved that way. One of the best plays of the championship."
He added: "It is true that we depend on ourselves and we must continue in this line."