Choose plain frozen vegetables when keeping added fat down is the main consideration for a comfort dinner. Sainsbury's lists 0.8g fat and 0.2g saturates per 100g cooked as instructed for its Vegetable Medley, while M&S lists 0.7g fat and 0.2g saturates per 100g for its Frozen British Vegetable Medley; buttered and oil-containing mixes have different ingredients and cooking requirements, so compare the exact packs before choosing.
If vegetables are going into a casserole, pie, pasta bake, curry or roast-style dinner, the choice between a plain mix and one containing butter or oil affects what is already in the dish before you add a sauce or topping.
Frozen vegetables offer formats for a quick side or an ingredient added to a meal. Check the cooking directions for the particular bag: a steam bag and a roasting mix need different preparation.
Similar-looking vegetable mixes can have different ingredients. Sainsbury's lists butter containing milk in Aunt Bessie's Green Vegetable Mix, so its ingredients and saturated-fat figure matter when comparing it with a plain mix.
Start with the ingredients and per-100g panel, then check how the vegetables will be cooked and what else the dinner will contain.
| Priority | What to check | Your needs |
|---|---|---|
| Fat and saturates | Compare fat and saturates per 100g and check whether the ingredients include butter or oil. Sainsbury's lists 0.8g fat and 0.2g saturates per 100g cooked as instructed for its Vegetable Medley, against 4.4g fat and 2.5g saturates per 100g for the buttered Aunt Bessie's mix. | I want to know what is already in the vegetables before adding them to dinner. In a Food Standards Agency and Ipsos Northern Ireland survey of 611 people interviewed in September–November 2024, 49% said they actively used traffic-light labels while food shopping; that figure concerns food shopping generally, not frozen vegetables specifically. |
| Cooking method | Read the instructions for cooking from frozen and note any added oil. Waitrose & Partners' Frozen Grilled Vegetable Mix contains sunflower oil, and its directions call for oil when pan-frying or a lightly greased tray when oven cooking. | For a quick side, I may prefer a mix with microwave instructions. For a traybake, I need to account for any oil used during cooking as well as what is in the bag. |
| Portion and dish | Check the amount you plan to use and whether the mix suits a side dish, casserole or filling. NHS guidance says 80g of fresh, canned or frozen fruit and vegetables counts as one 5 A Day portion, with exceptions including potatoes and some other starchy foods. | I want enough vegetables for the dish without assuming that their portion size tells me the fat content of the finished meal. |
| Ingredients and allergens | Read the current ingredients and allergen information for the exact variant, particularly when it includes butter or sauce. Sainsbury's lists milk in the butter used for Aunt Bessie's Green Vegetable Mix. | If I need to avoid an ingredient, a vegetable name on the front of the pack is not enough; I need to check the full label. |
Added butter changes the comparison: Sainsbury's lists 4.4g fat and 2.5g saturates per 100g for Aunt Bessie's buttered mix, versus 0.8g fat and 0.2g saturates per 100g cooked as instructed for its Vegetable Medley.
Check the ingredients first, then compare the per-100g figures for the products you are considering.
Serving sizes can differ between packs. NHS guidance recommends using the per-100g nutrition figures when comparing saturated fat.
Compare products on that basis, then consider how much of the chosen product will go into your meal.
Waitrose & Partners' grilled-vegetable directions call for oil or a lightly greased tray. A buttered mix already contains butter before any other ingredients are added to the dinner.
Read the preparation directions alongside the ingredients, and decide whether the vegetables or another part of the dish will provide the buttery or oily element.
Sainsbury's lists butter containing milk in Aunt Bessie's Green Vegetable Mix. A plain-looking vegetable category does not establish the ingredients of an individual product.
Check the current pack's ingredients and allergen information whenever you buy a flavoured mix or switch variants.
These examples describe particular ranges or products, not every frozen vegetable sold under each brand.
Tesco Groceries lists Birds Eye Country Mixed Vegetables and Steamfresh mixed-vegetable bags among its frozen mixed vegetables.
Tesco Groceries lists own-label 1kg mixed, casserole and farmhouse vegetable products in its frozen mixed-vegetable category.
Sainsbury's Vegetable Medley 1kg contains carrots, peas, sweetcorn, broccoli and red pepper. Its listed values per 100g cooked as instructed are 0.8g fat and 0.2g saturates.
M&S Frozen British Vegetable Medley contains broccoli, cauliflower, garden peas and Chantenay carrots, with listed typical values of 0.7g fat and 0.2g saturates per 100g.
Waitrose & Partners' Frozen Grilled Vegetable Mix includes aubergine with sunflower oil; its listed values are 1.7g fat and 0.2g saturates per 100g.
These steam-bag mixes and cut vegetables are options for a comfort dinner where you want to choose any butter, sauce or cooking oil separately. Check each current pack for ingredients, nutrition and cooking directions.
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A steam-bag vegetable mix to consider for a dinner side when you want to choose any sauce or butter separately. Follow the current pack's cooking and hot-steam directions.
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Another steam-bag mix for a vegetable side alongside a comfort dinner. Check the current pack for its ingredients and cook-from-frozen directions.
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Chopped spinach is an option for adding a vegetable to a savoury filling or sauce without choosing a pre-buttered mix. Cook thoroughly and follow the current pack directions.
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A peas-and-sweetcorn mix to consider as a side or an addition to a savoury pie. Check the current pack's preparation directions and cook until piping hot.
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Cut okra is an option for a curry or stew when you want to choose the other ingredients yourself. Cook thoroughly and follow the current pack directions.
No. Ingredients differ between products: Sainsbury's lists 0.8g fat per 100g cooked as instructed for its Vegetable Medley, but 4.4g per 100g for Aunt Bessie's vegetable mix containing garlic-and-herb butter. Compare the exact products' ingredients and per-100g nutrition.
Use the saturates value per 100g to compare similar products, as NHS guidance advises. Sainsbury's lists 0.2g per 100g cooked as instructed for its Vegetable Medley and 2.5g per 100g for the buttered Aunt Bessie's mix; also consider what you will add during cooking.
Yes. NHS guidance says 80g of fresh, canned or frozen fruit and vegetables counts as one 5 A Day portion, with exceptions including potatoes and some other starchy foods. Check what is in the particular mix when planning a portion.
Follow the instructions for the exact product. Sainsbury's Vegetable Medley has directions for microwaving from frozen with water or cooking on the hob; its instructions also say to ensure the vegetables are piping hot.
Yes, particularly in flavoured or buttered products. Sainsbury's lists butter containing milk in Aunt Bessie's Green Vegetable Mix. Read the current pack's ingredients and allergen information rather than relying on the vegetable name.