Step #1 MIX egg, feta cheese, spinach, cream cheese spread & onions until well mixed.
Step #2 Set aside.
Step #3 PLACE 1 of the phyllo sheets on a clean work surface.
Step #4 Brush lightly with butter.
Step #5 Top with 2 more phyllo sheets, brushing more of the remaining butter between each layer.
Step #6 Place remaining phyllo between sheets of plastic wrap; set aside.
Step #7 SPREAD 1/5 of the spinach mixture along 1 of the short sides of the phyllo stack; fold in both long sides, then roll up, starting at 1 of the short sides to make a log.
Step #8 Repeat with the remaining phyllo sheets & spinach mixture to make 4 more logs.
Step #9 Brush with remaining butter.
Step #10 To prevent phyllo from cracking, score logs at 1-inch intervals.
Step #11 Place in large freezer-weight resealable plastic bags or wrap tightly in plastic wrap.
Step #12 FREEZE up to 3 months.
Step #13 When ready to bake, remove desired number of logs from freezer.
Step #14 Refrigerate, tightly wrapped, several hrs or overnight until thawed.
Step #15 Place on baking sheet.
Step #16 Bake in preheated 375°F-oven for 25 min or until golden brown.
Step #17 Cool 5 min.
Step #18 ; place on cutting board.
Step #19 Cut each log into 6 slices with serrated knife to serve.