Combine sugar, cinnamon, and nuts. Melt butter. Brush bottom of 9 X 13 pan with butter. Continue using approximately 1/3 of the sheets. Spread half of walnuts on Phyllo dough. Continue layering another 1/3 of Phyllo brushing with butter after each sheet. Spread with remaining walnuts. Continue with remaining Phyllo brushing each sheet with butter. Cut through top layer of Phyllo dough to make 24 squares. Cut each square into a triangle. Bake in oven at 350 degress for approximately 35 minutes or at 300 degrees for 1 hour. Remove from oven and pour hot honey over baklava. Cool and cut into diamonds. Store at room temperature, and keep covered.