If you're looking for a versatile, durable, and eco-friendly food storage solution, the Glasslock Oven Safe Square 6pc set deserves your attention. This set includes three square containers in different sizes, each with a tight-sealing lid, making it ideal for meal prep, leftovers, and even oven-to-table serving. In this review, we'll explore the design, performance, and value of this popular set.
Glasslock Oven Safe Square 6pc set
Glasslock has built a reputation for producing high-quality tempered glass containers that can withstand extreme temperature changes. The Oven Safe Square 6pc set is no exception, offering the convenience of going from freezer to oven to dishwasher without worry. Whether you're a busy parent, a meal prep enthusiast, or someone who simply wants to reduce plastic waste, this set promises to be a kitchen workhorse.
What's in the Box?
The Glasslock Oven Safe Square 6pc set includes three square containers with matching lids: a 1.5-cup container (OCST-040), a 3.1-cup container (OCCT-085), and a 5.4-cup container (OCCT-148). Each container is made from tempered soda-lime glass, which is both strong and resistant to thermal shock. The lids are made from BPA-free plastic with a silicone gasket that creates an airtight seal, keeping your food fresh longer.
The square shape of these containers is a standout feature. Unlike round containers, square ones stack more efficiently in your fridge, freezer, or pantry, saving valuable space. They also make it easier to pack lunches or store leftovers in a uniform way. The clear glass allows you to see the contents at a glance, reducing the time you spend rummaging through your fridge.
- Three square containers: 1.5 cups, 3.1 cups, and 5.4 cups
- Tempered glass safe for oven (up to 450°F without lid), microwave, freezer, and dishwasher
- BPA-free plastic lids with silicone seal for leak-proof storage
- Stackable design for space-saving organization
Performance: Oven, Microwave, and Dishwasher Testing
We put the Glasslock Oven Safe Square 6pc set through its paces in real-world scenarios. The containers performed admirably in the oven, handling temperatures up to 450°F (232°C) without any issues. We baked individual portions of mac and cheese and roasted vegetables directly in the containers. The glass heated evenly, and the containers remained sturdy when removed with oven mitts. Note: Always remove the plastic lid before placing in the oven.
In the microwave, the containers are equally reliable. The glass does not absorb odors or stains, even after reheating tomato-based sauces or curries. The lids can be used in the microwave as well—just make sure to vent them by slightly lifting a corner to allow steam to escape. After multiple cycles, the lids maintained their seal and showed no signs of warping.
Cleaning is a breeze. The containers are dishwasher safe, and we found that they come out sparkling clean after a cycle. The glass does not retain food odors, and the silicone gasket in the lid is easy to clean by hand with a brush. We did not experience any staining or cloudiness, which can be a concern with some plastic containers.
- Oven safe up to 450°F (without lid) – perfect for baking and reheating
- Microwave safe (with lid vented) – no hot spots or damage
- Dishwasher safe – top rack recommended for lids, glass on any rack
- No staining or odor retention after repeated use
Comparing the Sizes: Which Container to Use When
The set includes three sizes that cover a wide range of storage needs. The 1.5-cup square container (OCST-040) is ideal for small portions like dips, sauces, or single servings of yogurt. The 3.1-cup round container (OCCT-085) is a great all-rounder for lunch portions or side dishes. The 5.4-cup container (OCCT-148) is the largest and works well for family-sized leftovers, meal prep for two, or storing bulk ingredients like grains.
One of the best features of this set is the ability to mix and match. You can use the larger container for a main dish and the smaller ones for sides or snacks. The square shape also means they fit neatly into lunch bags or bento-style carriers. If you need even more variety, Glasslock offers other sets and individual containers, such as the Glasslock Oven Safe Rectangle 3.5 cups (OCRT-090), which can complement this square set nicely.
Durability and Build Quality
Glasslock containers are made from tempered glass that is four times stronger than regular glass. During our testing, we accidentally dropped the 1.5-cup container from counter height onto a tile floor—it survived with no cracks or chips. The glass is also resistant to scratches from metal utensils, though we recommend using wooden or silicone tools to preserve the surface.
The lids are another strong point. The silicone gasket creates a tight seal that prevents leaks, even when we tipped the containers upside down with liquid inside. The four locking tabs on the lid snap securely onto the container rim, providing confidence that your food stays fresh and your bag stays dry. Over time, the lids have held up well without cracking or losing their seal.
- Tempered glass – resistant to thermal shock and impact
- Leak-proof lids with four locking tabs and silicone gasket
- BPA-free materials for safe food contact
- Lids are easy to clean and maintain
Who Should Buy the Glasslock Oven Safe Square 6pc Set?
This set is perfect for anyone looking to reduce plastic waste and invest in long-lasting glass storage. It's especially useful for meal preppers who need to portion out meals for the week. The square shape stacks beautifully in the fridge, and the oven-safe feature allows you to cook and store in the same container—saving time on cleanup.
Families will appreciate the variety of sizes, while singles or couples can use the larger containers for leftovers and the smaller ones for snacks. If you already own other Glasslock products, these square containers will fit right in with your collection. For those who need even more capacity, consider adding the Glasslock Oven Safe Round 3.1 cups or the Glasslock Oven Safe Round 5.4 cups to your lineup.
Overall, the Glasslock Oven Safe Square 6pc set delivers on all fronts: durability, versatility, and convenience. Whether you're baking, storing, or reheating, these containers handle it all with ease. If you're ready to upgrade your kitchen storage, explore the Glasslock Oven Safe Square 6pc set today and experience the difference quality glass makes.
