Who is each format for?

Parents packing a snack for an outing

An individual plain shortbread portion is easier to pack as one biscuit snack than a sharing pack. Check the pack quantity as well as the portion size: some individually wrapped formats from Walker’s Shortbread and Dean’s are sold by the case.

Families choosing a caramel-and-chocolate treat

A single 50g millionaire’s-shortbread bar offers a different snack from plain butter shortbread. Tesco, Sainsbury’s and M&S list single-serving examples; read the per-bar nutrition information when deciding whether that serving suits the occasion.

Families checking food allergies

Read the current packet for ingredients and precautionary allergen statements before serving. The listed millionaire’s-shortbread products contain milk, wheat and soya, and their warnings about other allergens differ.

What should you check?

Start with the portion you want to pack, then compare the nutrition information and the exact product’s allergen statement.

Priority What to check Your needs
Portion and format Compare the weight of one portion, not just whether it is individually wrapped. Dean’s lists 10g mini packs and 25g packs; Tesco and Sainsbury’s list single 50g millionaire’s-shortbread portions. Check whether you are buying one pack or a case. For an outing, I might want one small plain biscuit rather than a 50g caramel-and-chocolate bar. If the latter is the intended treat, an individual bar makes that portion clear.
Nutrition label Read the values per bar or slice and the traffic-light labels on the current pack. Tesco lists 256 kcal, 7.3g saturates and 18.4g sugars for its 50g bar, marking saturates and sugars high; Sainsbury’s lists 255 kcal for its 50g slice. I want to know what the whole serving contains before packing it. In the Food Standards Agency and Ipsos Northern Ireland’s 2024 tracker, 49% of the 611 adults interviewed in Northern Ireland said they actively used traffic-light labelling when shopping for food; that figure concerns food shopping generally, not shortbread.
Allergens Check the exact packet’s ingredient list and precautionary statements immediately before serving. The listed millionaire’s-shortbread products contain milk, wheat and soya; their warnings about nuts and other possible cross-contact are not identical. If a child has a food allergy, I need the statement for the product in my hand, not an older web listing or an assumption based on a similar-looking bar.

What can catch you out?

  • Assuming a single bar is a small biscuit portion

    A bar can be one serving without being the portion you intended for a brief outing. Tesco’s and Sainsbury’s listed 50g millionaire’s-shortbread servings contain 256 kcal and 255 kcal respectively.

    Compare the per-serving panel with a smaller individually portioned plain shortbread if portion size matters for this snack.

  • Using an old listing to decide allergy suitability

    Ingredients and allergen statements can change, while products that look similar can carry different precautionary warnings. An all-butter description does not establish suitability for someone with a milk allergy.

    Read the exact packet before serving and check every relevant ingredient and cross-contact statement.

  • Confusing school food with a parent-packed snack

    The Department for Education’s school-food guidance addresses food provided in state-funded schools in England. Separately, the Department of Health and Social Care’s explanatory memorandum describes England’s restrictions on certain retail promotions of high-fat, sugar and salt products.

    For a snack supplied by a school or holiday provider, ask the provider which food rules and policies apply. For a snack you buy and pack yourself, focus on its portion, label and allergens.

Which brands offer these formats?

Tesco

Tesco lists a 50g Millionaire’s Shortbread single bar.

  • The listing gives nutrition per bar, including 256 kcal, 7.3g saturates and 18.4g sugars.
  • Check the current packet for ingredients and allergens, as product information can change.

Sainsbury’s

Sainsbury’s lists a 50g Millionaires Slice with shortbread, caramel and chocolate.

  • The listing provides nutrition per slice alongside ingredient and allergy information.
  • It contains milk, wheat and soya; Sainsbury’s also states that it is unsuitable for customers with nut, egg or oat allergy because of manufacturing methods.

M&S

M&S lists a 50g Millionaire Shortbread with an all-butter shortbread base, caramel and milk chocolate.

  • Its product information includes ingredients and nutrition for the single serving.
  • The product contains milk, wheat and soya and is marked unsuitable for people with nut or peanut allergy.

Walker’s Shortbread

Walker’s Shortbread offers snack-pack formats, including single-finger and twin packs.

  • The snack-pack range includes individually portioned formats intended for lunch packing.
  • Its single-finger format is listed as a case of 240 packets, so check the quantity before ordering for a one-off outing.

Dean’s

Dean’s lists individually wrapped plain butter shortbread in 10g and 25g pack formats.

  • The product listings identify portion weights and provide ingredient and nutrition information.
  • These formats are listed in foodservice cases, including approximately 80 packs for the 25g option; check the order quantity.

A plain shortbread option on Joybuy

This 25g plain shortbread is an option to consider when you want an individual biscuit portion for an outing, rather than a caramel-and-chocolate millionaire’s-shortbread bar.

Island Bakery Organic Shortbread 25g

Island Bakery Organic Shortbread 25g

The 25g portion fits a plan to pack one plain shortbread biscuit snack. Check the current packet for wheat, milk and any other relevant allergen statements before serving.

View on Joybuy

Shortbread snack questions

Is a 50g millionaire’s-shortbread bar the same sort of portion as a small plain biscuit?

No: although it is one serving, the 50g caramel-and-chocolate bar is a different portion and format. Tesco lists 256 kcal for its bar and Sainsbury’s lists 255 kcal for its slice; check the current per-serving panel when choosing for a particular outing.

Which allergens should I check on shortbread?

Check the exact pack for wheat and milk, along with any other ingredients or precautionary warnings relevant to the child. The listed millionaire’s-shortbread products also contain soya; Tesco says its bar may contain peanuts and nuts, while Sainsbury’s gives a manufacturing-method warning for nut, egg and oat allergy.

Does England’s school-food guidance cover a snack a parent packs for a holiday outing?

The Department for Education’s guidance concerns food and drink provided in state-funded schools in England, rather than a parent-packed holiday outing snack. If an organised provider supplies the food, ask which policies and rules apply to that setting.

Are HFSS retail promotion restrictions the same as school-food rules?

No. The Department of Health and Social Care’s explanatory memorandum describes restrictions on certain location and volume-price promotions by medium and large businesses in England. The Department for Education’s school-food guidance addresses food provided in state-funded schools in England; the two address different settings.