11 The day after the Passover, that very day, they ate some of the produce of the land: unleavened bread and roasted grain.

Read Joshua 5:11 Using Other Translations

And they did eat of the old corn of the land on the morrow after the passover, unleavened cakes, and parched corn in the selfsame day.
And the day after the Passover, on that very day, they ate of the produce of the land, unleavened cakes and parched grain.
The very next day they began to eat unleavened bread and roasted grain harvested from the land.