Pepperidge Farm's Milano and Chessmen cookies may be tough to find in stores during the holidays due to a shortage (2024)

But as the cookie division doesn't outsource making its cookies, it's been harder for Campbell's to boost production.

"This portfolio is unique with proprietary recipes, and therefore we do not outsource production," Campbell said in a statement to Bloomberg News. "We've prioritized increasing supply and are already leveraging capacity opportunities across the network to meet increases in demand and maximize availability."

Food shortages have become more common in 2020.

At the beginning of the pandemic in March, panic buying often led to items flying off shelves soon after they arrived in store.

Read More: A chart predicts more than half of all US internet users will buy online groceries at least once this year, a 42% jump, as more consumers avoid in-store shopping

While that trend has since subsided, increased efforts by suppliers to social distance employees and the closing of processing plants due to infections or out of abundance of caution have also caused shortages as well. Experts say this could be the case for the next year and a half.

Meat, berries, and other fresh produce are at the top of that list.