13. Oats
Duration: 6 months to 3 years
Cost on average: $3–$8*
Oats are a popular and nutritious breakfast option. Their shelf life varies depending on the type, with flavored oats lasting six months and plain rolled oats lasting up to three years.
Sea Wave/Shutterstock © Oats
Expired oats may lose nutritional value and taste stale. While they are unlikely to cause harm, it’s best to consume oats before their expiration date.