CUT baguette lengthwise in half. Remove soft insides from both bread halves. (Reserve removed bread for another use.)
MIX cream cheese spread and pesto; spread evenly onto insides of bread shells. Fill evenly with tomatoes, artichokes, Parmesan cheese and spinach.
REASSEMBLE baguette; wrap tightly in plastic wrap. Refrigerate at least 1 hour or up to 4 hours. Cut into 25 slices to serve.