Firehouse Subs vegetarian options come down to one real sandwich and a couple of salads, so you can eat here without meat. Hot, meaty subs are the chain’s whole identity, but it keeps a dedicated Veggie Sub loaded with sautéed vegetables on the standard menu plus a customizable salad lineup. Below you’ll find exactly what to order, what’s secretly not vegetarian, and how to push a few items vegan. For more meatless restaurant guides like this one, start at What’s Vegetarian.
A Quick Look at Firehouse Subs
Firehouse Subs opened its first restaurant in Jacksonville, Florida, on October 10, 1994. Brothers Chris and Robin Sorensen started it, and the firefighter theme isn’t marketing fluff. Both founders were former firefighters, sons of a 43-year Jacksonville Fire & Rescue veteran. That family history is why the dining rooms lean into the firehouse decor and why a portion of sales funds the brand’s first-responder foundation.
Growth came fast. Firehouse now runs over 1,200 restaurants across 46 states, with Florida home to the most locations, and roughly 1,300-plus worldwide once you count Canada, Puerto Rico, Mexico, Switzerland, and the Middle East. In late 2021, Restaurant Brands International bought Firehouse Subs for about $1 billion, closing the deal that December. That’s the same parent company behind Burger King, Tim Hortons, and Popeyes, so Firehouse now sits inside one of the larger fast-food families in North America.
Firehouse Subs Vegetarian Options: What to Order
Here’s the short version. The Veggie Sub is your one off-the-shelf vegetarian sandwich, and the salads work as a lighter backup, with a rotating soup as a seasonal third pick. Everything else on the hot-sub board has meat. Each meatless pick in the table below is marked conservatively: something only gets a vegan check when the sources confirm it, and items with real question marks get a warning so you can verify at your location.
| Menu Item | Vegetarian | Vegan |
|---|---|---|
| Veggie Sub (as served, on white roll) | ✅ | ❌ |
| Veggie Sub, no cheese + no mayonnaise | ✅ | ⚠️ |
| Firehouse Salad (with mozzarella) | ✅ | ❌ |
| Side Salad (with mozzarella) | ✅ | ❌ |
| Firehouse or Side Salad, no cheese | ✅ | ✅ |
| Broccoli Cheese Soup (seasonal, varies by store) | ✅ | ❌ |
| White sub roll | ✅ | ✅ |
| Gluten-free roll | ✅ | ✅ |
| Wheat sub roll (contains honey) | ✅ | ❌ |
| King’s Hawaiian roll (contains milk) | ✅ | ❌ |
| Sautéed mushrooms (Worcestershire flag) | ⚠️ | ⚠️ |
| Sautéed bell peppers & onions | ✅ | ✅ |
| Italian, Balsamic dressing, Oil & Vinegar | ✅ | ✅ |
| Ranch / Light Italian dressing | ✅ | ❌ |
| Mayonnaise, Garlic Mayo, Hero Sauce | ✅ | ❌ |
| Honey Mustard (honey + egg/dairy) | ✅ | ❌ |
| Hand-spun shakes | ✅ | ❌ |
| Brownies & cookies | ✅ | ❌ |
| Bagged chips (third-party brands) | ⚠️ | ⚠️ |
The Veggie Sub: Your One Meatless Sandwich
The Veggie Sub is the only built-in vegetarian sandwich at Firehouse Subs, and it’s a genuinely solid one. Hot, steamed sautéed green bell peppers, caramelized onions, and mushrooms come first, then three cheeses on top: provolone, cheddar, and Monterey Jack. From there it picks up lettuce, tomato, raw onion, mayonnaise, deli mustard, and Italian dressing, with a pickle spear on the side. Bread choice matters too: this sub is built on your pick of white, wheat, gluten-free, or King’s Hawaiian.
As served, it’s vegetarian but not vegan. The three cheeses bring dairy and the mayo brings egg. If you eat dairy and eggs, order it exactly as written and you’re set. Stricter diners should hold the cheese and mayo and lean on the dressings instead, which I’ll cover in the vegan section below. One thing to flag before you commit: the sautéed mushrooms may carry a Worcestershire-type sauce, and standard Worcestershire contains anchovy. More on that caveat below.
Salads and Soup at Firehouse Subs
Firehouse Subs runs two salads, and both are vegetarian as a base. The Firehouse Salad layers romaine and iceberg with cucumber, bell pepper, tomato, and shredded mozzarella. It clocks in around 130 calories undressed, so it’s a light option next to a sandwich. Side Salad is a smaller version with the same ingredients and the same caveats.
Dropping the mozzarella is the only thing standing between these salads and a vegan order, so a no-cheese request makes either one plant-based. Stick with the regular Italian, Balsamic dressing, or Oil & Vinegar for dressing. Skip the Ranch and the Light Italian, which contain egg and/or dairy. Pair a no-cheese salad with a Veggie Sub minus the cheese and you’ve got a full meatless meal.
Many locations also rotate a Broccoli Cheese Soup, especially in cooler months, and it’s vegetarian. The published ingredient list runs water, broccoli, milk, cream, and both American and cheddar cheese, with no chicken stock or other meat base anywhere in it, confirmed against Nutritionix’s and FastFoodNutrition.org’s ingredient breakdowns for the item. It’s dairy-based, so it’s not vegan, and the cheese enzymes aren’t specified as microbial or animal, the same open question that applies to the sub cheeses. Soup availability varies by store and season, so call ahead if it’s the reason for your visit.
Sides, Shakes, and Desserts
Firehouse Subs is a steam-and-toast operation, so there’s no signature fried side like fries to worry about. Bagged chips, hand-spun shakes, and baked treats round out the sides and desserts. Shakes, brownies, and cookies are all vegetarian, but they’re dairy-based (and the baked goods also have egg), so none of them are vegan.
Chip flavor is a wild card. The bag rotates between Lay’s, Baked Lay’s, Miss Vickie’s, SunChips, and Ruffles depending on the location, and vegan status varies by brand and flavor, so check the packaging before you assume anything. Plain potato chips are usually fine, but a cheese- or sour-cream-flavored one won’t be, and that line shifts from brand to brand. No gelatin turns up anywhere on the menu in the sources checked for this guide, which is good news if that’s a concern for you.
One more practical note on the sweets: shakes and baked goods are the only desserts on offer, so a vegan or dairy-free diner is basically out of luck on the sweet side. Plan to skip dessert or bring your own. Dairy eaters get the better end of the deal, since the shakes are the standout treat and round out a Veggie Sub into a full meal.
What’s Vegan at Firehouse Subs?
There’s no dedicated vegan menu and no plant-based meat or vegan cheese at Firehouse Subs, so going vegan here means customizing. The good news is the build works. Order the Veggie Sub with no cheese and no mayonnaise on a white or gluten-free roll, load it with vegetables, and dress it with spicy mustard, deli mustard, Italian dressing, or oil and vinegar. Skipping the cheese on a Firehouse or Side Salad with a vegan dressing is the other easy play. You can also build your own veggie roll from the vegan toppings list.
Cross-checked against godairyfree.org and VeggL, here’s what’s confirmed vegan to build with. Rolls: the white sub roll and the gluten-free roll (a Schar-style ciabatta/hoagie). Toppings: avocado, banana peppers, bell peppers, black olives, cherry pepper rings, chopped and dill pickles, cucumber, iceberg and romaine lettuce, jalapeno peppers, onion, and tomato. Dressings, sauces, and condiments: Balsamic dressing, regular Italian, Oil & Vinegar, marinara sauce, spicy mustard, deli mustard, Sriracha, Sweet Baby Ray’s BBQ sauce, Cajun seasoning, and the dry garlic blend.
What to avoid as a vegan takes a little more attention. Wheat roll bread contains dry honey and the King’s Hawaiian roll contains milk, so neither is vegan. All three sub cheeses, the salad mozzarella, the “Italian Seasoning” (it’s actually a cheese blend), and the Garlic Butter all contain dairy. Mayonnaise, Garlic Mayo, Honey Mustard, Ranch, Light Italian, and the Firehouse Hero Sauce contain egg and/or dairy, and the Honey Mustard adds honey on top. Hold the sautéed mushrooms unless your location confirms the prep, since they may carry a Worcestershire sauce.
Special Dietary Requirements and Allergies
Gluten-free diners get a real option: Firehouse Subs carries a gluten-free roll, and it’s also vegan, which makes it the most flexible base on the menu. Build the Veggie Sub or a custom veggie roll on it and you cover both needs at once. Just remember that a roll built without gluten doesn’t guarantee a gluten-free kitchen, so cross-contact is still possible in a shared prep space, and the wheat roll and King’s Hawaiian roll both carry gluten if that’s not a concern for you.
A couple of allergen notes deserve your attention. “Italian Seasoning” is a cheese blend, not a spice mix, and the Hero Sauce is datil hot sauce mixed with mayonnaise, so both carry dairy or egg in a spot easy to miss. Whether Firehouse uses a shared fryer couldn’t be confirmed, and since there’s no fried menu, none of the guides checked address it, so treat fryer cross-contact as unconfirmed rather than safe. Any serious allergy deserves a direct ask: get the official allergen guide from your location and confirm the prep before you order.
Tips for Vegetarians at Firehouse Subs
- Default to the Veggie Sub. It’s the only built-in meatless sandwich, so it’s your reliable order at any location.
- Choose your bread on purpose. White and gluten-free rolls are vegan-friendly. Wheat roll has honey and King’s Hawaiian has milk, which matters for stricter diets.
- Question the mushrooms. Sautéed mushrooms may carry a Worcestershire-type sauce with anchovy. Strict vegetarians should ask, or just stick with peppers and onions.
- Skip the dairy and egg sauces if you’re vegan. Mayonnaise, Garlic Mayo, Honey Mustard, Ranch, Light Italian, and the Hero Sauce all contain animal ingredients. Use mustard, Italian dressing, or oil and vinegar instead.
- Turn a salad vegan by dropping the cheese. Dropping the mozzarella from a Firehouse or Side Salad with Balsamic dressing, regular Italian, or Oil & Vinegar makes it fully plant-based.
- Watch the seasonings. “Italian Seasoning” is a cheese blend and the Garlic Butter contains milk, so leave both off a dairy-free order.
- Ask before ordering soup. Broccoli Cheese Soup is vegetarian but not vegan, and it’s not on every location’s line, so confirm it’s available first.
- Check chip packaging. Bagged chips are third-party and vary by flavor, so read the label rather than assuming.
Firehouse Subs vegetarian options: frequently asked questions
Conclusion
Firehouse Subs won’t be a vegetarian’s first stop, but it works in a pinch. The Veggie Sub gives you a real meatless sandwich, the salads and seasonal soup round out a meal, and a few swaps push either the sub or a salad vegan. Just watch the honey in the wheat roll, the dairy hiding in the seasonings, and the mushroom question mark. When in doubt, ask for the allergen guide and confirm the prep at your location. For more on ordering with confidence anywhere, see our guide to eating vegetarian and vegan at restaurants, browse the full restaurant guides, or check out our breakdowns for Subway and Jimmy John’s.
