Roll out each lump of dough onto parchment, until 1/2" thick. Use a knife to square up your dough (scraps can be saved and used for to make a mini log, with extra filling).
Spread an even layer of date filling on dough, leaving one of the short ends bare to make for easy sealing. Don't use so much filling that it's hard to roll up, but it's also the good stuff, so don't skimp. (I actually recommend using *slightly* more filling than what is in the picture)
Tightly roll up your log, rolling toward the end you left bare. Press to seal. Wrap up in parchment paper, and let chill in fridge for a few hours.
Once dough is chilled, preheat oven to 325, and line baking sheets with parchment. Slice logs into 1/2" thick rounds. Place on prepared sheets, and bake until lightly brown, about 15 minutes.