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Last updated: Aug 9, 2026

Firehouse Subs

Brown Sugar Caramelized Onions

Small Sub ToppingsPopular

Firehouse Subs Brown Sugar Caramelized Onions is carb-leaning, with about 54% of macro calories from carb. Each serving has 14 calories, 0.1g protein, 1.9g carbs, and 0.7g fat, making it a lighter restaurant option to compare with larger meals.

0.5 Ounces (14.2g)

Serving Size

14.2 g

Serving Weight

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Calories

Per serving

0.1 g

Protein

1.9 g

Carbs

0.7 g

Fat

Nutrition Facts

Amount per serving

Calories14 kcal

% Daily Value*

Total Fat 0.7 g1%

Saturated Fat 0 g0%

Trans Fat 0 g—

Cholesterol 0 mg0%

Sodium 65 mg3%

Total Carbohydrate 1.9 g1%

Dietary Fiber 0.2 g1%

Total Sugars 1.3 g—

Protein 0.1 g0%

Vitamin A—

Vitamin C—

Vitamin D—

Calcium—

Iron—

Potassium—

Caffeine—

* The % Daily Value tells you how much a nutrient in a serving contributes to a daily diet.

Nutrition Breakdown

kcal

Protein0.1 g (4%)

Carbs1.9 g (54%)

Fat0.7 g (42%)

Estimated calorie contribution using 4 kcal/g for protein and carbohydrates and 9 kcal/g for fat.

Meal Planning Insights

Protein density1/10

4% of macro calories come from protein.

Satiety index3.1/10

Estimated from protein, fiber, calories, and fat balance.

Activity estimate3 min walk

About 1 minutes of running for this calorie total.

Key Nutrients

Protein 0.1 g0%

Fiber 0.2 g1%

Sodium 65 mg3%

Sugars 1.3 g—

Saturated Fat 0 g0%

How we calculate these values

Diet Compatibility

High protein1/10 protein density from 0.1g protein and 14 calories.No

Lower carb1.9g carbs per serving.Yes

Low fat0.7g total fat per serving.Yes

High sugar1.3g total sugars per serving.No

High sodium65mg sodium per serving.No

Vegetarian source flagNo vegetarian flag is published for this item.Not flagged

Ingredients

YELLOW ONIONS, SOYBEAN OIL, BUTTER (CREAM, SALT), WATER, CONTAINS LESS THAN 2% OF SALT, NATURAL FLAVOR (MILK), BETA CAROTENE(COLOR). SPICE BLEND MIX: GARLIC POWDER, DEHYDRATED GARLIC, SALT, MALTODEXTRIN, PARSLEY, AUTOLYZED YEAST EXTRACT, ROASTED GARLIC…

Allergens

Contains

WheatMilkSoy

Similar Items in Small Sub Toppings

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Au Jus Bell Peppers2 kcal · 0.1 g protein Au Jus Mushrooms2 kcal · 0.3 g protein

Compare with other items

Select up to 3 items to compare calories, protein, sodium, and macros.

Quick comparisons

Brown Sugar Caramelized Onions has 136 fewer calories than 1% Chocolate Milk and 6.9g less protein. Compare

Brown Sugar Caramelized Onions has 76 fewer calories than 1% Milk and 6.9g less protein. Compare

1% Chocolate Milk150 kcal · 7 g protein1% Milk90 kcal · 7 g protein5-Cheese Mac & Cheese380 kcal · 17 g proteinApple Juice100 kcal · 0 g proteinAu Jus Bell Peppers5 kcal · 0.2 g proteinAu Jus Bell Peppers3 kcal · 0.1 g protein

Compare with 1% Chocolate Milk

Brown Sugar Caramelized Onions Compared With Nearby Items

Compared with Au Jus Mushrooms, another Small Sub Toppings item at Firehouse Subs, Brown Sugar Caramelized Onions has 12 more calories than it and 0.1g less protein than it. That makes this page useful for deciding between nearby menu choices, not just reading a raw nutrition label.

Data Source and Methodology

Nutrition values for Brown Sugar Caramelized Onions are maintained in Nutrimetry from restaurant-published menu data and were last checked on Aug 9, 2026. Macro percentages use 4 calories per gram for protein and carbohydrates and 9 calories per gram for fat.

Read the data methodology

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