Xomoo Silicone Freezer Tray vs Glass Containers: Which Works Better?

If you cook for a dog with a sensitive stomach, the freezer is half the job. I learned that the hard way with Biscuit, my nine-year-old beagle mix, who walks away from kibble and then looks at me like I am the one being difficult. Twenty years of running a school cafeteria taught me a few things about feeding picky eaters, but freezing single portions is a different skill entirely. For years I froze his Sunday batches in glass containers, and glass is good at a lot of things. Then I switched part of the routine to the Xomoo silicone freezer tray, and I found myself reaching for it more and more. After a few months of using both side by side, I finally understand which tool belongs where.

Short answer: the Xomoo tray wins for freezing soup, stew, and sauce into exact portions that pop out in one piece, and it wins for stacking flat in a crowded chest freezer. Glass wins when you want to freeze and reheat in the same container, with no transfer step at all. Most homes, including mine, end up keeping both. What matters is knowing which job each one does better, so let me walk you through how they actually compare after months of Sunday cooking for a picky beagle.

The Two Ways to Freeze a Portion

There are really two ways to freeze a cooked meal for a dog. The first is the container method: you fill a glass dish, put the lid on, and freeze the whole thing. The meal stays in that dish from freezer to microwave to bowl, and the only decision you make is how much to fill it. The second is the cube method: you freeze the food in a tray, pop the frozen portions out, and store them loose in a bag or a bin. Each portion is identical, and you grab exactly as many cubes as the next meal needs.

I have used both methods for years, and I used to think the container method was obviously better. It is fewer dishes, and it is what everyone pictures when they think of meal prep. But the cube method has one advantage I kept underestimating: flexibility. A frozen glass container holds one meal and only that meal. A stack of frozen cubes can become half a meal, a full meal, or a snack, depending on what Biscuit actually wants to eat that day. For a dog who sometimes walks away from his bowl, that flexibility is not a small thing.

So this comparison is really about when the container method beats the cube method and when it does not. I tested both with the same batch of turkey and sweet potato stew, the same Sunday, the same freezer. The Xomoo tray, two trays in the pack with two cavities each, gave me four 500ml portions at once. The glass containers got the same stew in roughly the same serving sizes. Then I watched what happened over the next week and a half.

	Xomoo Silicone Tray	Glass Containers
Portion control	Molded 250ml and 500ml fill lines in each cavity, so every portion comes out even	You fill by eye or weigh each container at the counter
Freezer stacking	Flat 10.75 by 4.92 by 2.17 inch tray tucks into tight spaces and stacks like a book	Tall containers stack upward and leave rounded gaps
Leak-proof seal	Clear silicone lid seals both cavities and stays leak-proof	Plastic lids can warp in the dishwasher and stop sealing
Reheating	Pop the cube out and warm it in a bowl, one extra dish	Freeze and reheat in the same dish, straight from freezer to microwave
Oven safe	Silicone withstands up to 428°F, so it can go from freezer to oven	Glass bodies vary and most plastic lids are not oven safe
Dishwasher safe	Tray and lid are dishwasher safe and hold their shape	Glass bodies are fine, but plastic lids warp over time
Seeing what's inside	Silicone is not see-through, so you label or remember	Clear glass shows the contents at a glance
Breakage	Silicone flexes and drops without shattering	Glass chips and cracks, especially straight out of the freezer
Best for	Soups, stews, and sauces frozen into exact cubes	Anything you want to freeze and reheat in the same container

Where Xomoo Wins

The portion marks are the feature I did not expect to love. Both cavities in the Xomoo tray are scaled with 250ml and 500ml lines, so I can fill to the mark and know I am making an even meal without pulling out the kitchen scale. When you are cooking for a dog with a sensitive stomach, consistency matters more than it sounds like it should. A 500ml portion that is actually 500ml every single time means his meals stay the same even when my attention wanders on a Sunday afternoon.

The other win is the flat footprint. The tray is 10.75 by 4.92 by 2.17 inches, and it slides into the chest freezer like a book into a shelf. Glass containers stack, sure, but they stack upward, and rounded corners leave gaps. When the freezer is half full of chicken backs, frozen blueberries, and a bag of peas, a flat tray that tucks into the space above the rack is worth more than any other feature on the list. And because the silicone is flexible, a frozen portion pops out in one clean piece. No hot water, no prying with a butter knife, no half-melted stew running down the sink.

The lid deserves its own mention. The clear silicone lid seals both cavities and stays leak-proof, which matters because my chest freezer is a messy place. A container that leaks stew onto the shelf below it is a container I eventually stop using, and I have stopped using plenty of them. This one has not leaked once, even when I have stacked another tray directly on top of it while the stew was still soft. The tray is BPA free silicone, which matters to me because it spends weeks at a time in contact with food.

Where Glass Wins

Glass wins the moment reheating is part of the job. With a glass container, I fill it, freeze it, and later put the whole thing in the microwave, and Biscuit's dinner is warm with exactly two dishes to wash: the container and his bowl. With the Xomoo tray, I pop the cube out, drop it in a small saucepan or a bowl, and warm it there, which is one extra step and one extra dish. On a busy Tuesday night, that extra step is the difference between a smooth routine and a cluttered sink.

Glass also wins for anything that does not need portioning into a cube. Leftover cooked sweet potato, a half batch of pumpkin mash, a small amount of broth that would rattle around in a big tray. For those jobs I still reach for a small glass container without thinking. And glass is transparent in a way silicone is not: I can see exactly what is inside without peeling back a lid, which matters when the freezer holds four different batches and my labeling has gone sideways.

There is also something to be said for the way glass feels like a real dish. When I am reheating a portion for Biscuit, a glass container sits flat on the counter, holds its shape, and does not wobble. The Xomoo tray is flexible by design, which is exactly what makes it good at popping portions out, but it is not a serving dish. Glass never asks me to transfer anything, and on a tired evening, that is a genuine advantage.

Who Should Buy Which

Buy the Xomoo tray if you freeze soups, stews, and sauces in exact portions, if your freezer is crowded, or if you have ever stood at the sink trying to pry a frozen block out of a glass container. Buy glass containers if you want to freeze and reheat in the same dish, if you like seeing what is inside, or if most of your frozen portions get eaten within a few days. And if you are anything like me, you will buy both and use them for different jobs. Before you change anything about your dog's diet, run the plan past your vet. I cook for Biscuit because his stomach is sensitive and he walks away from kibble, but every dog is different, and a homemade diet deserves the same supervision as any other change.

What Actually Mattered After Three Months

The first thing that surprised me is how much the flat shape changed my freezer. I used to dread opening the chest freezer because it meant rearranging a tower of glass containers that had shifted and frozen together. Now the long-term portions live in flat trays, and the glass is only for the short-term stuff that will be eaten within a few days. The freezer opens like a drawer instead of a game of Jenga, and that alone has made me more likely to keep cooking for Biscuit instead of falling back on kibble.

The second thing is the pop-out test. Every portion from the Xomoo tray came out in one piece, even after three weeks in the back of the freezer. Every single one. I cannot say that about the glass containers, where I have chipped a corner of a frozen block with a butter knife more times than I want to admit. The silicone flexes, the edges release, and the cube lands in the bowl with nothing stuck to the sides.

The third thing is honesty about what the tray does not do. It does not reheat. It does not serve. It does not show me what is inside. And it is not the right tool for a half portion of leftovers that will be eaten tomorrow. Every time I have tried to force the tray into one of those jobs, I have been mildly annoyed and reached for glass instead. The tray is a freezing tool, and it is an excellent one. The moment I stopped asking it to be anything else, my kitchen got calmer.

What I Actually Freeze in Each One

In the Xomoo tray: turkey and sweet potato stew, chicken and rice porridge, beef and carrot broth, and plain turkey broth for the days a meal comes out drier than I wanted. These are all things that freeze into a solid block and reheat well in a saucepan. The molded lines make it easy to fill four equal portions without thinking, and the flat trays stack neatly next to the frozen blueberries.

In glass: the meals Biscuit will eat in the next three days, plus odds and ends like a half batch of pumpkin mash or a single serving of green beans. These get eaten soon enough that the freezer never has time to turn them into a mystery. If I know a portion is leaving the freezer within 72 hours, glass is the faster path from freezer to bowl, and that speed is worth the extra storage space it takes.

The Bottom Line

If I had to pick one, I would pick the Xomoo tray for the freezer and glass for the kitchen. That sounds like a dodge, but it is the honest answer after months of using both. The tray earns its place by making long-term storage flat, stackable, and exactly portioned, and glass earns its place by making reheating a one-dish job. They are not competing for the same spot in my routine. They are two tools that handle two different parts of the same Sunday cooking project, and my freezer is better because both are in it.