Fast pickStart with Moonmoon 1500ml bags if you want the largest all-round flat-freezer pick, then scroll for all five freezer-bag options and buying notes.
As an Amazon Associate I earn from qualifying purchases. Product prices and availability can change on Amazon UK.
Best Freezer Bags For Meal Prep UK
Each reusable freezer-bag pick is chosen for a different job: large flat-freezer portions, single servings, smoothie packs, sauce storage, or a mixed set to use alongside rigid containers.
Product formats and care details follow current Amazon listing or manufacturer information, not hands-on testing. Check the live listing before buying.
Best large freezer bag
Material
Silicone
Price
Reusable silicone: check live Amazon price
Best large freezer bag
Moonmoon Reusable Silicone Food Storage Bags (Set of 2, 1500ml)
A two-bag 1500ml reusable silicone set for flat-freezing larger portions when rigid tubs waste freezer space.
Best for: Flat-freezing soup, sauce, cooked mince and larger batch portions
Buy if: You want large reusable bags for soups, sauces, cooked mince or family-style freezer portions.
Avoid if: You mainly need fork-and-eat lunch boxes for work.
Price level
Reusable silicone: check live Amazon price
Material
Silicone
Set format
2 pack
Last checked
22 July 2026
Watch out: Large silicone bags need thorough drying before storing so odours do not build up.
Start with the job you need the container to do: cheap plastic tubs, glass meal prep boxes, leakproof lunch containers, freezer bags or a work-lunch setup.
Search
Best Meal Prep Containers UK
Quick Size Comparison: Best balance of reheating, stain resistance, lid quality and sensible price.
Choose freezer bags if your freezer drawer fills with bulky half-empty tubs. A reusable silicone bag can be filled, sealed, laid flat on a tray, frozen thin and then stacked upright or flat once solid.
They are best for food that can spread into a thin layer: soups, sauces, chilli, bolognese, cooked mince, smoothie fruit packs, marinades and small freezer portions. For delicate food that could be crushed, a rigid container is still the better choice.
Freezer Bags vs Freezer-Safe Containers
Freezer bags win on space and thaw speed. A flat portion has less depth for cold or heat to travel through, so it stores neatly and defrosts more predictably than a deep tub.
Containers still win for fork-and-eat lunches, microwave reheating and meals with separate components. The best setup is usually both: freezer bags for overflow and sauces, containers for the meals you carry or reheat most often.
What Size Freezer Bag Should You Buy?
A 1.5L bag is the most useful size for soups, sauces, cooked mince and two-person batch portions. Around 900ml works better for single servings and smoothie packs. Smaller bags are useful for snacks, sauces, fruit and chopped vegetables, but they are not full-meal containers.
If you are only buying one set, choose the size that matches the food you freeze most. Big bags are more flexible for batch cooking; mixed sets are tidier when you prep meals, snacks and sauces together.
How To Freeze Meal Prep In Bags Without Leaks
Fill the bag no more than two-thirds full, push out excess air, seal carefully and lay it flat on a tray before putting it in the freezer. Once the food is solid, remove the tray and stack the flat portions.
Label the bag or add masking tape with the meal name and date. Wash and dry reusable silicone bags fully before storing them closed, especially after curry, tomato sauce or marinades.
Freezer Bag Verdict
Buy reusable silicone freezer bags when freezer space is the bottleneck. Keep rigid tubs for structured lunches, and add larger freezer bags for flat-freezing sauces, soups and batch-cooked meals.
Frequently Asked Questions
Are reusable silicone freezer bags worth it for meal prep?
Yes, if you freeze food regularly and want to save space. They cost more upfront than disposable bags, but reusable silicone bags are better for repeated flat-freezing, washing and weekly rotation.
Can freezer bags replace meal prep containers?
Not completely. Freezer bags are best for flat-freezing and storage. Rigid containers are better for work lunches, separate meal components and eating or reheating directly from the container.
Can silicone freezer bags go in the microwave?
Some silicone freezer bags are listed as microwave suitable, but you should follow the exact product instructions. If unsure, defrost in the bag and transfer food to a microwave-safe container before reheating.
What foods freeze best in meal prep bags?
Soups, sauces, cooked mince, chilli, bolognese, smoothie packs, marinades and chopped fruit or vegetables freeze well in bags. Delicate foods that crush easily are better in rigid containers.
