Place the flour, crumbled yeast and spices in a large bowl. Add the corn and olive oils and stir until well combined. Gradually add the water and knead the dough for 2-3 minutes into a soft smooth dough. Set aside.
For the filling:
Mix the pressed dates with the oil and spices until it becomes a soft, malleable paste.
To assemble:
Divide the dough into balls the size of a fist and divide the date paste into the same number of balls. Both the dough and the date balls may be dripping with oil: this is normal.
Preheat the oven to 220C (425F).
On a large work surface, sprinkle a generous amount of sesame seeds. Flatten a ball of dough into a round the size of a pita. Flatten out a date ball and place it on top of the dough. Sprinkle some sesame seeds on top and turn the dough over and roll out to the size of a dinner plate. The sesame seeds will prevent the dates from sticking to the work surface. Turn the dough over again, date side up and roll the dough to form a log shape. Repeat with the remainder.
Cut the logs into 5cm-wide (2-inch) biscuits and place on baking sheets. You do not have to place them too far apart because they do not spread. Bake for 10 minutes until they are golden brown. Serve slightly cooled or store up to a month in a sealed container.