Fully Loaded Croissan Wich: Allergens at a Glance
The honest verdict
Fully Loaded Croissan Wich · Burger King
The Fully Loaded Croissan Wich is Burger King's premium breakfast sandwich: a croissant with sausage, bacon, scrambled egg, and melted American cheese. The croissant dough contains wheat, milk (butter), and egg. The cheese adds milk. The scrambled egg patty contains egg and may contain milk or soy lecithin. The sausage and bacon are typically free of the Big-9 but may contain soy-based fillers or processing aids. Cross-contact is possible via shared grills and prep surfaces. This is a different product from the standard Croissan Wich (one meat, no bacon) and the French Toast Sandwich (griddle-cooked, syrup). Confirm all ingredients with your Burger King 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 Fully Loaded Croissan Wich contains three of the Big-9 allergens: wheat (croissant), milk (cheese + croissant), and egg (croissant dough + egg patty).
Burger King's croissant is made with butter and eggs, making it a source of both milk and egg allergens beyond the sandwich fillings.
Shared grills and toasters at Burger King create cross-contact risk for wheat, milk, and egg between breakfast items.
Every major allergen, one clear grid
Each of the nine major allergens marked for Fully Loaded Croissan Wich at Burger King — 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
The croissant is made with butter and milk. American cheese is a dairy product. The scrambled egg patty may contain milk or butter. Multiple layers of dairy are present.
- EggContains
The croissant dough contains egg. The scrambled egg patty is the primary egg component. Egg is present in both the bread and the protein.
- Wheat / GlutenContains
The croissant is made from wheat flour. This is the primary source of wheat/gluten in the sandwich.
- SoyMay contain
Soy lecithin is a common emulsifier in croissant dough and processed cheese. The sausage and bacon may contain soy protein or soy-based fillers. Refined soybean oil may be used in preparation. Check with Burger King for current ingredient declarations.
- PeanutFree
Peanut is not an ingredient in the croissant, meats, cheese, or egg. Cross-contact is unlikely in Burger King's breakfast preparation environment.
- Tree NutFree
Tree nuts are not listed as ingredients in any component of the Fully Loaded Croissan Wich. No almond, walnut, or other tree nut ingredients are typical.
- FishFree
Fish is not an ingredient in this breakfast sandwich. Burger King's breakfast menu does not include fish items, so cross-contact risk is minimal.
- ShellfishFree
Shellfish is not an ingredient in any component of this sandwich. Not a concern for this menu item.
- SesameFree
Sesame is not a listed ingredient in the croissant or other components. Burger King does not typically use sesame on breakfast items. Confirm if sesame seeds appear on any croissant variant at your location.
“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 fully loaded croissan wich. 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 the croissant (ask about a bowl or platter option)
Request the egg patty cooked on a clean surface
Ask about sausage and bacon ingredient lists for soy content
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
Burger King's breakfast line uses shared grills and prep surfaces. The scrambled egg patty is cooked on the same flat-top as pancakes, French toast, and other items. The croissant is toasted in shared toasters or ovens. Cross-contact with wheat, milk, egg, and soy is possible through equipment sharing. Ask your location about dedicated preparation surfaces if you have a severe allergy.
If your allergy is severe
For anaphylactic allergy to wheat, milk, egg, or soy, the Fully Loaded Croissan Wich is not safe without restaurant-level confirmation. Multiple components contain these allergens, and shared cooking equipment adds cross-contact risk. Carry your epinephrine auto-injector. If you cannot confirm preparation details, consider a simpler breakfast item like hash browns (verify ingredients separately) or skip Burger King's breakfast menu entirely.
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
The Fully Loaded version adds bacon to the sausage-and-egg base of the regular Croissan Wich, plus an extra slice of cheese. Allergen-wise, both contain wheat (croissant), milk (cheese, croissant butter), and egg (croissant dough + egg patty). The Fully Loaded has more dairy from the extra cheese and potentially more soy from the bacon processing. The core allergen profile is the same — the difference is in quantity, not allergen type.
Yes. The croissant is made from wheat flour, making this sandwich a direct source of gluten. There is no gluten-free croissant option at Burger King. If you need a gluten-free breakfast, Burger King does not currently offer a certified gluten-free breakfast sandwich. The egg and meat components are gluten-free by ingredient, but cross-contact on shared grills is a concern.
No. Burger King's scrambled egg patty contains egg as the primary ingredient, but it may also contain milk, butter, or cream as part of the preparation. The exact recipe varies by location and supplier. If dairy is a concern, ask whether the egg patty is cooked with butter or contains milk ingredients. The cheese is a separate dairy source that can be removed.
Burger King does not offer a standard 'deconstructed' version of this sandwich. You can ask for the ingredients (egg, sausage, bacon, cheese) served in a bowl or on a plate, but this is a special request and may not be accommodated at all locations. If successful, this removes the wheat from the croissant but does not eliminate cross-contact from shared grills.
Burger King's sausage patty and bacon strips are typically free of the top allergens by ingredient, but they may contain soy-based fillers, preservatives, or natural flavors derived from soy. The sausage is pork-based; the bacon is cured pork belly. Neither contains milk, egg, wheat, peanut, tree nut, fish, shellfish, or sesame as primary ingredients. Check the specific supplier's ingredient list at your location for soy content.
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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 Burger King 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 Burger King, 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.