The Costco fall meal prep guide 2026 applies the warehouse's most exciting September and October arrivals to the specific domestic challenge that every busy household faces as summer ends and the school-year routine takes over: how to feed the household well, efficiently, and affordably through the October-to-November stretch when fall schedules are at their most demanding and the temptation to order delivery is at its highest. The fall 2026 Costco assortment is genuinely exc