FILLING:
Simmer dates, water, and sugar for 5 minutes. Add walnuts. Cool.
DOUGH:
Mix dough together; refrigerate until thoroughly chilled.
Roll half on floured wax paper into 9x12 rectangle. Spread with filling and roll, starting from a long side. Repeat with remaining dough. Wrap cookie rolls in aluminum foil; freeze overnight.
Slice frozen cookie rolls into ΒΌ in. thick slices. Place on cookie sheet and bake at 350 for 10 minutes.