Firehouse Subs Prime Rib Sub Nutrition & Calories

Firehouse Subs Prime Rib Steak and text listing what's on the sandwich

This sub sandwich is a fairly new item on the menu and may not be available at all locations.

Three sizes are available: the smaller 4″, an 8″ medium-sized sub, and the footlong 12″ sandwich. One 4″ sandwich contains 400 calories, 22 grams fat, 33 grams carbohydrates, and 22 grams protein.

This is your guide to a detailed overview of the nutrition facts, allergens, and ingredients in the Prime Rib Steak sandwich from Firehouse Subs quick service restaurant.

Nutritional content and calories may vary due to preparation methods and for any menu substitutions.

Prime Rib Sub Nutritional Information


Calories

There are 400 calories in a small 4″ Firehouse Prime Rib Steak sandwich.  A medium sub is about 8″ and includes 800 calories.  The large 12″ sub contains about 1,300 calories.

Depending on the sub size, nearly 50% of total calories is from fat. Approximately 30% of total calories are derived from carbohydrates, and the remaining 20% of total calories is from protein.

  • Small Sub: 400 calories
  • Medium Sub: 800 calories
  • Large Sub: 1,340 calories

Sodium

There is a significant amount of sodium in this steak sandwich. A small 4″ sub includes nearly 1,300 milligrams of sodium, which exceeds half of the daily value recommended by the FDA.

The large foot-long sandwich includes over 4,000 milligrams of sodium.

Steak sandwich from Firehouse Subs with text listing calories and other nutrition facts.

Nutrition Summary: Small

Serving Size 4″ Sub

CALORIES

400

TOTAL FAT

22g

(28%DV)

CARBOHYDRATES

33g

(12%DV)

PROTEIN

22g
Saturated Fat6g (30%DV)
Trans Fat0g
Cholesterol60mg (20%DV)
Sodium1260mg (55%DV)
Dietary Fiber3g (11%DV)
Total Sugars7g

%DV (Percent Daily Values) are based on a 2,000 calorie diet. Calorie needs vary and your daily value may be higher or lower. Provided for informational purposes only. Consult with your physician for dietary or healthcare advice.

Nutrition Summary: Large

Serving Size 12″ Sub

CALORIES

1340

TOTAL FAT

71g

(91%DV)

CARBOHYDRATES

103g

(37%DV)

PROTEIN

80g
Saturated Fat20g (100%DV)
Trans Fat0g
Cholesterol215mg (72%DV)
Sodium4090mg (178%DV)
Dietary Fiber11g (40%DV)
Total Sugars21g

%DV (Percent Daily Values) are based on a 2,000 calorie diet. Calorie needs vary and your daily value may be higher or lower. Provided for informational purposes only. Consult with your physician for dietary or healthcare advice.

What’s in the Prime Rib Steak Sub?


This sandwich is made with slow cooked beef prime rib, provolone, and caramelized onions with a garlic mayo sauce. It’s topped with lettuce, tomato and deli mustard and served on a toasted roll.

Enjoy a crisp dill pickle on the side. You can also customize the sandwich with additional toppings and choice of bread. Choose white, wheat or gluten-free bread, then top it with select add-ons such as mushrooms, bacon, or pepper hot sauce. Nutritional values vary with any variations to the standard sandwich.

Steak Sub Ingredients

Here is the list of ingredients in the Prime Rib Steak Sub Sandwich from Firehouse Subs.

Beef Rib

Ingredients:Beef Rib Lifter, Water, Corn Starch, Beef Broth Concentrate (beef broth and salt), Montreal Steak Seasoning, Garlic, Extractives of Dill and Paprika and Sunflower Oil, Chicken Seasoning, Smoke Flavor, Garlic Powder, Lemon Powder, and Onion Powder.

  • Montreal Steak Seasoning is made with salt, black pepper, dill seed, coriander seed, and red pepper.
  • Chicken Seasoning is made with salt, flavorings, corn starch, yeast, spice, xanthan gum, silicon dioxide (an anti-caking aid), citrus blend (lemon juice concentrate, baking soda, sodium carbonate), dextrose, sodium phosphates, salt, char flavor (tapioca dextrin, salt, grill Flavor (from sunflower oil), smoke flavor, and silicon dioxide.

Wheat Sub Roll

Ingredients:Enriched Wheat Flour (Wheat Flour, Niacin, Reduced Iron, Thiamine Mononitrate, Riboflavin, Folic Acid), Malted Barley Flour, Water, Sugar, Yeast, Soybean Oil, Salt, Wheat Gluten, Wheat Bran, Dry Honey (Honey, Sugar), Caramel Color, Dough Conditioner (ascorbic acid and enzymes), Calcium Propionate (preservative), Vinegar, Mold Inhibitor (cultured wheat flour, fermented lactic acid).

Provolone Cheese

Ingredients:Pasteurized Milk, Cheese Culture, Salt, Enzymes, Natural Smoke Flavor.

Caramelized Onions

Ingredients:Onions, Maltodextrin, Salt, sugar, Modified Corn Starch, Corn Syrup Solids, Autolyzed Yeast Extract, Onion Juice, Dehydrated Onion, Natural Flavors, Red Wine Extract (Sulfites), Safflower Oil, Disodium Guanylate, Disodium Inosinate, Yeast Extract, Guar Gum, Potato, Maltodextrin, Baking Soda, Tricalcium Phosphate, Spice, Grill Flavor (from Sunflower Oil), Canola Oil, and Silicon Dioxide.

Vegetables

Ingredients:Iceberg Lettuce and Tomato.

Garlic Mayonnaise

Ingredients:Soybean Oil, Water, Corn Syrup, Egg Yolks, Distilled and Cider Vinegar, Salt, Mustard Seed and Calcium Disodium EDTA, Garlic Seasoning, and Water.

  • Garlic Seasoning is made with garlic powder, dehydrated garlic salt, maltodextrin, dehydrated parsley, autolyzed yeast extract, roasted garlic powder, sugar, Disodium inosinate, disodium guanylate, citric acid, natural flavor (contains wheat), and canola oil added as processing aid.

Spicy Mustard

Ingredients:Vinegar, Mustard Seed, Salt, and Spices.

Check the Ingredients: Jimmy John’s Spicy Italian Sub

What is Calcium Disodium EDTA?

This odorless crystalline powder has a slight salty flavor.  As a food additive, it’s used to preserve flavor, color and texture, and to increase the shelf life of foods.

It binds to metals to prevent discoloration or a reduction in flavor.

Calcium Disodium EDTA is often found in sauces and salad dressings, mayonnaise, canned carbonated soft drinks, canned vegetables, and pickled vegetables.

Allergens

The steak sub sandwich is made with ingredients that include milk, soy, wheat and gluten.


Ingredients, allergens, and nutrition facts are based on available information as of the date this article was published and/or updated. Restaurants and food manufacturers may change their recipes without notice. Check directly with the food provider for the most accurate and up-to-date information. NutritionandIngredients.com does not provide health or wellness advice or dietary recommendations. Our aim is to research commercially processed food and publish articles for informational purposes only. Unless otherwise stated, % Daily Value is based on 2,000 calories per day, but calorie needs vary by individual. Always consult your physician for any healthcare or dietary advice.

Nutrition facts, allergens, and ingredients source: Firehouse Subs

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