Ever ordered a roast beef sub expecting something hearty, only to get a dry, forgettable sandwich? That is exactly why the potbelly roast beef stands out. It hits that balance between classic deli flavor and real portion value, especially when you order it right.
This guide covers everything you need before you step up to the counter or open the Potbelly App. You will see what cut of beef they use, default toppings, price by size, calories, protein count, and how to customize it like someone who orders here every week. If you want a no-nonsense beef sandwich that actually delivers, keep reading.
What Is the Potbelly Roast Beef Sandwich?
The potbelly roast beef sandwich is a classic deli-style sub built around thinly sliced roast beef. It is simple on paper, but the execution matters. Potbelly toasts the sandwich by default, which warms the beef slightly and brings everything together.
You will find it sitting next to heavy hitters like the A Wreck and Italian on the menu. Compared to those, this one is more straightforward. No stacked meats, no overload of sauces, just beef, cheese, and fresh toppings done right.
It is also one of the better choices if you are chasing protein without going into something greasy like Mama’s Meatball.
What’s In It, Full Ingredient Breakdown
The Roast Beef Itself
Potbelly uses thinly sliced roast beef, served deli-style. It is not shredded or overly processed. You get clean slices with a soft bite.
- Leaner than meatball or salami-based subs
- Mild seasoning, not overly salty
- Works well with both creamy and sharp toppings
It is closer to what you expect from a traditional hoagie than a fast food sandwich.
Default Toppings
By default, the potbelly roast beef sandwich includes:
- Roast beef (main protein)
- Cheese (varies by order)
- Lettuce
- Tomato
- Mayo
You can swap or remove anything. That flexibility is part of why this sandwich stays popular.
Best Cheese Pairings for Roast Beef
Cheese choice changes the whole sandwich. Most people overlook this.
Top Options
- Swiss cheese: The best overall pairing, slightly nutty, melts well
- Provolone: Mild and creamy, lets the beef stand out
- Cheddar: Sharper, adds bite but can overpower if overdone
What Actually Works Best?
Swiss is the safe choice. It complements roast beef without competing with it.
If you want something stronger, go cheddar. If you want balance, stick with provolone.
Pro Tip: Ask for extra cheese only if you are skipping mayo. Too much of both makes the sandwich heavy.
Potbelly Roast Beef Price by Size
Potbelly menu keeps pricing simple with three sizes: Skinny, Original, and Big.
Prices vary depending on location, but these are accurate ranges as of April 2026.
| Size | Description | Estimated Price |
| Skinny | Thin-cut bread, lighter portion | $6.99 – $7.79 |
| Original | Standard portion | $8.79 – $10.29 |
| Big | Double meat and larger bread | $11.49 – $13.49 |
Which Size Gives Best Value?
- Original is the sweet spot for most people
- Big only makes sense if you want extra protein or plan to split
- Skinny works for light lunches or combo meals
If you are ordering soup or chips, Original keeps things balanced.
Nutrition Facts and Calorie Breakdown
Calories depend on size, cheese, and extras.
| Size | Calories | Protein | Notes |
| Skinny | 400–480 | 20–25g | Light but still filling |
| Original | 600–750 | 30–40g | Strong balance |
| Big | 850–1050 | 45g+ | High calorie, high protein |
Key Nutrition Insights
- Roast beef is a lean protein, better than processed meats
- Cheese adds fat and sodium
- Mayo increases calorie count fast
High-Protein Order Tip
If your goal is protein without excess calories:
- Order Original size
- Choose Swiss or provolone
- Skip mayo
- Add extra roast beef
This pushes protein up without blowing past 800 calories.
How It Tastes, Honest Review
This is a clean, classic beef sandwich.
The roast beef is soft and slightly savory, not heavily spiced. When toasted, the edges warm up just enough to bring out flavor without drying it out.
Texture matters here:
- Soft beef slices
- Crunch from lettuce
- Juicy bite from tomato
Compared to the Italian, it is less salty. Compared to A Wreck, it is less intense but easier to finish.
It is not messy unless you overload sauces. That makes it one of the better options for delivery through DoorDash or Uber Eats.
How To Customize Your Order
This is where most people get it wrong. The base sandwich is good, but small tweaks make it much better.
Best Add-Ons
- Horseradish sauce: Adds sharp heat that pairs perfectly with beef
- Hot peppers: For spice and crunch
- Giardiniera: Chicago-style kick, works great with roast beef
What to Skip
- Too much mayo, it hides the beef flavor
- Heavy sauces combined, creates a soggy sandwich
Step-by-Step Ordering Strategy
- Pick multigrain wheat bread
- Ask for toasted
- Choose Swiss cheese
- Add horseradish sauce
- Add hot peppers if you want heat
- Keep sauces light
Pro Tip: Ask for sauces on the side if you are ordering delivery. It keeps the bread from getting soggy.
Best Bread Choices for Roast Beef
Bread changes the experience more than most people think.
Top Picks
- Multigrain wheat: Best balance of flavor and texture
- White bread: Softer, more classic deli feel
- Thin-cut wheat: Good for lighter meals
Multigrain wheat works best with roast beef because it adds structure and a slight nutty taste.
Best Pairings, Soup, Sides, Drinks
You can turn this into a full meal with the right combo.
Soup Pairings
- Broccoli Cheddar Soup
- Chicken Pot Pie Soup
The creamy soups balance the lean beef.
Sides
- Pickle spear
- Baked chips
- Side salad
Drinks
- Iced tea
- Soda
- Hand-dipped shake if you want something heavier
If you are using the Pick Your Pair combo, go with Skinny roast beef plus a cup of soup. It is one of the best value combos on the menu.
Who Should Order This Sandwich?
You’ll Like It If:
- You want a high-protein meal
- You prefer simple, classic deli flavors
- You do not want something greasy
Skip It If:
- You want bold, layered flavors like the Italian
- You prefer spicy or heavily sauced sandwiches
- You want a vegetarian option
Common Questions About Potbelly Roast Beef
Is the potbelly roast beef sandwich healthy?
It can be. It is one of the better high-protein options, especially if you skip mayo and go light on cheese.
Does Potbelly use real roast beef?
Yes, it is sliced roast beef, not processed strips.
What sauce goes best with roast beef?
Horseradish is the top choice. It adds sharpness that works perfectly with the meat.
Is it good for delivery?
Yes. It holds up better than meatballs or heavily sauced sandwiches.
Frequently Asked Questions
Can I add extra meat?
Yes, and it is worth it if you want more protein.
Is there a gluten-free option?
Some locations offer gluten-free bread, but availability depends on the store.
Does it come in catering trays?
Yes, you can order roast beef sandwiches for groups through Potbelly catering.
Can I earn rewards on this?
Yes, use the Potbelly Perks app to earn points and redeem rewards.
Final Thoughts
The potbelly roast beef sandwich keeps things simple, and that is exactly why it works.
Here are the key takeaways:
- One of the best high-protein options on the menu
- Customization makes a big difference
- Swiss cheese and horseradish are the winning combo
- Original size offers the best value
If you want a reliable, filling sandwich without overthinking it, this is a safe pick.
Next step: check out the Italian or A Wreck for something heavier, or browse current deals and combos on potbellymenu.org before you order.
Disclaimer: Prices and menu items vary by location. Last updated April 2026.