The Firehouse Subs Prime Rib Steak Sub is one of the boldest and most flavorful sandwiches on the menu. Crafted for meat lovers who want something hearty and satisfying, this sub features premium, slow-cooked prime rib steak, freshly toasted bread, and melty provolone cheese—creating a delicious experience in every bite.
Whether you’re in the mood for a high-protein lunch or a fulfilling dinner, this sub delivers gourmet flavor in a fast-casual setting. It’s big, bold, and packed with smoky, savory richness that you won’t forget.
The Prime Rib Steak Sub is built with quality and flavor in mind. Here’s what you can expect:
USDA Choice Prime Rib – Fire-grilled and thinly sliced for tenderness
Melted Provolone Cheese – Adds a creamy, melty finish
Toasted Sub Roll – Soft on the inside, crisp on the outside
Choice of Fresh Veggies – Like lettuce, tomato, onions, and pickles
Optional Condiments – Customize with mayo, mustard, hot sauce, or horseradish for a kick
Every bite is loaded with bold, beefy flavor—ideal for when you’re really hungry or want to treat yourself to something special.
This sub stands out from the crowd for several reasons:
High-Quality Meat – Prime rib is a cut known for its flavor and marbling
Fire-Grilled Taste – Adds a smoky, savory flavor you won’t get from cold cuts
Generous Portions – Thick layers of meat and melted cheese make it extra filling
Customization Options – Add extra toppings or sauces to make it yours
It’s a great choice for anyone who wants a steakhouse-style sandwich in a quick-service setting.
This sub is perfect for:
Lunch breaks – When you need something hearty to get through the day
Late dinners – Great after a long day when you want to refuel
Special cravings – Perfect when you’re in the mood for something meaty and rich
Weekend treats – A delicious reward for making it through the week
Pair it with chips and a drink—or even a brownie from the dessert bundle—for the full Firehouse experience.
Curious about what makes the Prime Rib Steak Sub special? This FAQ section answers the most common questions about ingredients, customization, and how it compares to other Firehouse Subs. Whether it’s your first time ordering or your go-to favorite, these answers will help you get the most out of your meal.
The Prime Rib Steak Sub uses USDA Choice prime rib, known for its tenderness and marbling. It’s fire-grilled to bring out its full, savory flavor and sliced thin for easy eating.
Yes! You can add or remove toppings like lettuce, tomatoes, onions, pickles, and condiments. Want it spicy? Add hot sauce or jalapeños. Prefer it creamy? Extra mayo or provolone is a popular choice.
Most Firehouse Subs locations offer the Prime Rib Sub in medium and large sizes. Some may offer a small or half size. Check with your local store or the online menu for exact sizing options.
While both feature beef, the Prime Rib Sub uses a more premium cut (prime rib) with a fire-grilled flavor. The Steak & Cheese Sub typically features sliced sirloin and comes with sautéed onions and bell peppers. Both are delicious—but the Prime Rib offers an upgraded experience.
Yes! You can order it as part of a Firehouse Combo, which includes a side (like chips or a cookie) and a drink. It’s a great way to round out your meal and try other Firehouse favorites.