Buttery Smashed Jack 19

Buttery Smashed Jack

1 burger (279g) · 780 cal · 31g protein · Poor · 19/100
Contains seed oils

How to order it

Bun (Gourmet Signature)·Beef Patty (Smashed)·Cheese·Lettuce·Tomatoes·Ketchup·Mayonnaise·Garlic Herb Butter

How we scored it

This product is heavily processed with multiple harmful ingredients such as soybean oil, palm oil, and high fructose corn syrup. The presence of artificial additives and preservatives further reduces its healthiness, despite some beneficial ingredients like turmeric and paprika.

Nutrition facts

Per 1 burger (279g)Amount% DV
Calories 780
Total fat 51g 65%
Saturated fat 23g 115%
Trans fat 2.5g
Cholesterol 115mg 38%
Sodium 1030mg 45%
Total carbohydrate 51g 19%
Dietary fiber 4g 14%
Sugars 13g
Protein 31g 62%

Jack in the Box's published nutrition. Percentages are of the daily value on a 2,000-calorie diet.

Key ingredients

8
Soybean Oil
Very Bad

A common vegetable oil high in omega-6 fatty acids, often processed and linked to inflammation.

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High Fructose Corn Syrup
Very Bad

A sweetener linked to health concerns when consumed in excess.

See more about High Fructose Corn Syrup →
Corn Syrup
Very Bad

A processed sweetener with similar concerns as high fructose corn syrup.

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Sugar
Bad

Added for sweetness but can contribute to excess calorie intake and blood sugar spikes.

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Palm Oil
Bad

A type of fat that has been linked to environmental concerns and health issues when consumed in excess.

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Enriched Wheat Flour
Bad

Refined flour with added nutrients, but often lacks fiber and whole grain benefits.

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Dextrose
Bad

A simple sugar that can contribute to high calorie content and blood sugar spikes.

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Mono- and Diglycerides
Bad

Emulsifiers used to improve texture but may be processed additives.

See more about Mono- and Diglycerides →

Scout's score is an independent read of Jack in the Box's published ingredient statement and nutrition for this item, last scored September 2026. Recipes change — check the chain for today's menu. Scout takes no payment from any chain. How we score · Full Jack in the Box menu.