Orange Chocolate Nut Truffles

3 1/2 cups semisweet chocolate chips
2 cups confectioners' sugar
2/3 cup heavy cream
4 tablespoons orange juice
2 teaspoons orange zest
2 cups chopped walnuts

Melt chocolate chips in 4 tablespoons water in top of double boiler over hot, but not boiling, water, stirring frequently. Turn chocolate into medium bowl. Add sugar, cream, orange juice and orange zest; stir until combined. Beat to mix well. Place plastic wrap directly on surface; refrigerate overnight.

Place a sheet of wax paper on a damp surface; sprinkle walnuts on wax paper. Drop chocolate by teaspoonsful onto walnuts. Roll to cover completely. Refrigerate until ready to serve.