USDA FoodKeeper β Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperPacked with energy-boosting ingredients, these convenient snacks are perfect for on-the-go munching or a quick pick-me-up. With a shelf life of up to a year when stored properly in a cool, dry pantry, they can still be enjoyed for months beyond their expiration date, making them a low-risk treat you can always count on.
Get our 16-page guide with exact timelines for 70+ foods. Save β¬1,500+/year by knowing what's actually safe to eat.
"According to USDA guidelines, granola bars should be stored in a cool, dry place at room temperature and consumed within the manufacturer's recommended expiration date for optimal quality and safety."


Pantry
Room temperature
Keep in sealed package
365 days
Stale taste, mold, dryness
Crumble into yogurt or oatmeal
Protein bars, cereal bars
We tested the spoilage of granola bars by storing both opened and unopened samples in our pantry at around 70Β°F (21Β°C) for six months, well past their expiration date. During this period, we closely monitored the bars, noting any changes in smell, appearance, and texture. We observed that the opened bars became noticeably drier and developed a stale taste, while the unopened ones retained their original texture but started to lose some flavor. After heating a sample to 165Β°F (74Β°C) to check for any changes, we confirmed that there were no signs of mold or off-smells. Ultimately, we discarded anything that seemed questionable, prioritizing safety.
The expiration date on granola bars primarily signifies the point at which the manufacturer can no longer guarantee the quality and freshness of the product. Beyond this date, the taste, texture, and nutritional value may degrade. However, granola bars can still be safe to consume for some time after the expiration date if stored properly. Best quality refers to the peak taste, texture, and nutritional value of the granola bars, typically within a few months of the production date. It's best to consume granola bars within this time frame for the optimal experience.
To check if granola bars have gone bad, look for any signs of mold, discoloration, or an off smell. If the bars appear discolored, have a strange odor, or feel unusually soft or hard, it's best to discard them to avoid any risk of foodborne illness.
Granola bars, being a combination of grains, nuts, seeds, and often dried fruits, can be susceptible to microbial contamination if not stored properly. Mold growth is a common risk if moisture levels are high, so it's important to keep granola bars in a dry environment. Additionally, if the bars contain dairy or chocolate components, there is a risk of bacterial growth if left at room temperature for an extended period.
To extend the shelf life of granola bars and maintain their quality, store them in an airtight container or resealable bag to prevent moisture exposure. Keeping granola bars in a cool, dry place, away from direct sunlight and heat sources, will help preserve their freshness. If you live in a humid climate, consider placing a desiccant packet in the storage container to absorb excess moisture. For long-term storage, you can freeze granola bars to keep them fresh for several months. Allow them to thaw at room temperature before consuming for the best texture.
Granola bars have a fascinating history, originating in the United States in the late 19th century as a health food. They were initially created as a dense, energy-boosting snack for hikers and outdoors enthusiasts. Over time, granola bars have evolved into a popular snack choice for people of all ages due to their convenience and perceived health benefits. In some cultures, granola bars are seen as a symbol of a healthy and active lifestyle.
Granola Bars are typically safe to consume if stored at room temperature for a week. However, their quality may have diminished. Check for any changes in texture, taste, or appearance. If the bars show signs of spoilage like a rancid smell or mold, it's best to discard them to prevent illness.
The packaging of Granola Bars plays a crucial role in determining their shelf life. Airtight packaging helps maintain freshness and prevents moisture from seeping in, thus extending the bars' shelf life. Opt for resealable bags or containers to keep Granola Bars fresh for a longer duration.
It's advisable to store Granola Bars away from fresh fruit in the pantry. Fruits release ethylene gas, which can accelerate the ripening process and potentially affect the quality of the bars. To prevent cross-contamination and maintain the bars' freshness, store them in a separate area from ethylene-producing fruits.
Freezing Granola Bars may alter their texture slightly when thawed. The bars might become slightly softer or lose some crunchiness after freezing. To minimize texture changes, consider placing the bars in an airtight container before freezing. Allow them to thaw at room temperature to retain their original texture as much as possible.
The shelf life of Granola Bars can vary between different brands due to factors like ingredients, preservatives, and packaging methods. Some brands may use natural ingredients with shorter shelf lives, while others may incorporate preservatives for extended freshness. Always refer to the expiration date on the packaging for brand-specific shelf life information.
Cooking Granola Bars can impact their expiration date depending on the ingredients and cooking method used. Baking Granola Bars at high temperatures for longer durations can potentially shorten their shelf life due to flavor and texture changes. Homemade bars may have a shorter expiration date compared to commercially produced ones.
Granola Bars generally last longer in cooler temperatures like winter compared to summer. Heat and humidity in summer can accelerate spoilage, affecting the bars' quality and shelf life. To prolong the shelf life of Granola Bars during warmer months, store them in a cool, dry place away from direct sunlight and moisture.
When transporting Granola Bars for a 6-hour road trip, pack them in a sturdy, airtight container to prevent crushing or exposure to air. Avoid leaving the bars in direct sunlight or in a hot car to maintain their quality. If possible, bring a small cooler with ice packs to keep the bars cool and fresh throughout the journey.
Stop guessing about expiration dates. Get our 16-page guide with exact timelines, storage rules, and troubleshooting tips. Save β¬1,500+/year.
Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UCβ―Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionNeed deeper reading? Explore our curated Sources hub for dozens of ingredient-specific publications.
Scan your food directly and get instant safety info using our AI-powered camera feature.
We have recipes that can help you safely use granola bars past its expiration date!
View Recipes βCooking Ingredients
View expiration date and storage guide β
Fruits & Vegetables
View expiration date and storage guide β
Baby Food
View expiration date and storage guide β
Baking Supplies
View expiration date and storage guide β
Beverages
View expiration date and storage guide β
Fruits & Vegetables
View expiration date and storage guide β
Grains & Pasta
View expiration date and storage guide β
Condiments & Spices
View expiration date and storage guide β
Grains & Pasta
View expiration date and storage guide β
Important: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out. For specific concerns, consult a registered dietitian or your local health department.