Quarter Pounder Deluxe: Allergens at a Glance
The honest verdict
Quarter Pounder Deluxe · McDonald's
The Quarter Pounder Deluxe is a McDonald's burger with a 100% beef patty, a sesame seed bun, American cheese, mayonnaise, ketchup, pickles, onions, lettuce, and tomato. The allergen profile is anchored by wheat from the bun, milk from the cheese, egg from the mayonnaise, and sesame from the bun seeds. Soy is present in refined oils and may be in the bun. Peanut, tree nut, fish, and shellfish are not typical ingredients. The Deluxe variant differs from the standard Quarter Pounder by adding lettuce, tomato, and mayonnaise — the mayo introduces egg as an allergen not present in the plain Quarter Pounder. Always confirm with your specific McDonald's location before ordering.
Allergen details change and vary by location. This is a general guide — always confirm with the restaurant before ordering. Not official or medical advice.
Key facts
The Quarter Pounder Deluxe bun is topped with sesame seeds, making it a direct source of sesame allergen.
Mayonnaise on the Deluxe variant introduces egg as an allergen not present in the plain Quarter Pounder.
McDonald's uses a canola oil blend for cooking beef patties, not peanut oil — peanut is not a concern.
Every major allergen, one clear grid
Each of the nine major allergens marked for Quarter Pounder Deluxe at McDonald's — Contains, May contain (cross-contact or varies), or Free. Anything we couldn't confirm defaults to "may contain," because a shared kitchen can't be ruled out without the restaurant's official menu.
- MilkContains
American cheese on the Quarter Pounder Deluxe contains milk. The bun may also contain milk or butter. Ordering without cheese removes the primary milk source, but trace milk in the bun may remain.
- EggContains
Mayonnaise is a standard component of the Quarter Pounder Deluxe and contains egg. The Deluxe variant specifically includes mayo, unlike the plain Quarter Pounder. Removing mayo eliminates this allergen.
- Wheat / GlutenContains
The sesame seed bun is wheat-based. There is no gluten-free bun option at McDonald's. The bun is the primary wheat source for this burger.
- SoyMay contain
Soybean oil is used in McDonald's fryers and may be present in the bun and sauces. Highly refined soy oil is FDA-exempt from allergen labeling and tolerated by most with soy allergy. Those with severe soy sensitivity should confirm with the restaurant.
- PeanutFree
Peanut is not an ingredient in the Quarter Pounder Deluxe components. McDonald's does not use peanut oil for frying. Cross-contact is very unlikely.
- Tree NutFree
Tree nuts are not an ingredient in the Quarter Pounder Deluxe. No tree nut components in the bun, patty, cheese, or toppings.
- FishFree
Fish is not an ingredient in the Quarter Pounder Deluxe. McDonald's does not fry fish items in the same oil as beef patties, but confirm if the restaurant serves Filet-O-Fish and uses shared grills.
- ShellfishFree
Shellfish is not an ingredient in the Quarter Pounder Deluxe. Not present in any standard McDonald's burger components.
- SesameContains
The bun on the Quarter Pounder Deluxe is topped with sesame seeds. This is a direct source of sesame. McDonald's buns are among the most common sources of sesame in fast food. Ordering without the bun or requesting a bun without sesame seeds removes this allergen, though cross-contact on shared prep surfaces is possible.
“May contain” means cross-contact is possible or the answer varies by location — not that the allergen is a listed ingredient. For a severe allergy, treat “may contain” the same as “contains” until the restaurant confirms otherwise.
Small changes that remove an allergen
Simple modifications that can take an allergen off your quarter pounder deluxe. Always name your allergy when you order and ask staff to confirm — a modification only helps if the kitchen prepares it separately.
Order without cheese
Order without mayonnaise
Request a bun without sesame seeds or order without the bun (lettuce wrap)
Order the plain Quarter Pounder (no mayo, no lettuce/tomato) instead of the Deluxe
A modification lowers exposure but doesn't erase cross-contact from shared fryers, grills, or prep surfaces. For a severe allergy, confirm the prep with a manager before you eat.
Read this before you order
Cross-contact & severe allergies
A “free of” mark on the grid above means the allergen isn't an ingredient — it doesn't mean the item was made in an allergen-free kitchen. Two things matter most:
Shared fryers & equipment
Shared grills at McDonald's cook beef patties alongside other items. The same spatulas and prep surfaces may contact buns with sesame, cheese, and sauces. Cross-contact risk is moderate — the bun, cheese, and mayo are direct ingredients, but trace transfer from other orders is possible. Ask staff about dedicated prep surfaces if you have a severe allergy.
If your allergy is severe
For anaphylactic allergy to wheat, milk, egg, or sesame, confirm bun ingredients, cheese type, and mayo recipe with the specific McDonald's location before ordering. The Quarter Pounder Deluxe is not guaranteed safe for any of these allergens without restaurant-level confirmation. Carry your epinephrine auto-injector. If you cannot confirm preparation details, consider a lettuce-wrapped burger without cheese or mayo.
This guidance is general and can't account for how any single location prepares your food. The restaurant's staff and official allergen menu are the final word — when in doubt, ask, or choose something else.
❓Frequently Asked Questions
Yes, the American cheese on the Quarter Pounder Deluxe contains milk. The bun may also contain milk or butter. Ordering without cheese removes the primary dairy source, but trace milk in the bun may remain. The Deluxe variant does not add any other dairy beyond the cheese and potential bun ingredients.
No. The sesame seed bun is wheat-based, making the Quarter Pounder Deluxe a direct source of gluten. There is no gluten-free bun option at McDonald's. A lettuce-wrapped burger without the bun removes the wheat, but confirm the patty is prepared on a clean surface away from bun crumbs.
The Deluxe adds mayonnaise (egg), lettuce, and tomato. The plain Quarter Pounder has no mayo, so it is egg-free by ingredient. Both have the same wheat (bun), milk (cheese), and sesame (bun seeds) profile. If egg allergy is your concern, order the plain Quarter Pounder without mayo.
No. McDonald's uses a canola oil blend for cooking beef patties, not peanut oil. The Quarter Pounder Deluxe does not contain peanut ingredients. Peanut cross-contact is very unlikely in McDonald's burger preparation.
McDonald's pickles and onions are generally free of the Big-9 allergens. Pickles contain vinegar, water, salt, and spices — no milk, egg, wheat, soy, peanut, tree nut, fish, shellfish, or sesame. Onions are fresh and plain. These toppings do not introduce additional allergens beyond the bun, cheese, and mayo.
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Please verify before ordering
Allergen info changes and varies by location
Recipes, suppliers, and preparation methods change often and differ between locations, so the details here can go out of date or not match your specific McDonald's restaurant. Always confirm directly with the restaurant and check its official allergen menu before ordering. This page is a general research summary — it is not official information from McDonald's, and it is not medical advice. If you have a food allergy, decisions about what is safe to eat should be made with the restaurant and, where relevant, your healthcare provider.