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Buttery Smashed Jack™

Jack in the Box · United States

Updated September 23, 2026

Buttery Smashed Jack™

Oils & additives

Explore the ingredients PRūF tracks. Possible alternatives are labeled. The ingredient statement is below.

Nutrition

Recorded nutrition for Buttery Smashed Jack™
NutrientAmount
Calories780
Total fat51 g
Saturated fat23 g
Trans fat2.5 g
Cholesterol115 mg
Sodium1030 mg
Carbohydrate51 g
Fiber4 g
Total sugars13 g
Protein31 g

Serving size: 279 g

Allergens

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Ingredients

Bun, Gourmet Signature (Flour (Wheat, Malted Barley), Water, Sugar, Wheat Gluten, Yeast, Palm Oil, Contains less than 2% of each of the following: Salt, Enriched Wheat Flour (Wheat Flour, Niacin, Reduced Iron, Thiamine Mononitrate, Riboflavin, Folic Acid), Ascorbic Acid, Calcium Peroxide, Enzymes, Calcium Sulfate, Dextrose, Mono- and Diglycerides, Sodium Stearoyl Lactylate, Monocalcium Phosphate, Natural Flavors, Corn Flour, Soybean Oil, Spices (Turmeric, Paprika), Calcium Propionate (preservative). Topping: Water, Vegetable Protein (Pea), Dextrose, Maltodextrin, Modified Food Starch. Contains Wheat) || Beef Patty, Smashed (Beef, Contains 2% Or Less Of Encapsulated Salt, And Natural Flavor.) || Cheese, Real Swiss, Sliced (Part-Skim Milk, Cheese Culture, Salt, Enzymes. Aged over 60 days.) || Lettuce (Iceberg Lettuce.) || Tomatoes. || Ketchup (Tomato Concentrate from Red Ripe Tomatoes, Distilled Vinegar, High Fructose Corn Syrup, Corn Syrup, Salt, Spice, Onion Powder, Natural Flavoring.) || Mayonnaise (Soybean Oil, Water, Salted Egg Yolks (Egg Yolk, Salt), Distilled Vinegar, Sugar, Salt, Spice, Lemon Juice Concentrate, Calcium Disodium EDTA (to protect flavor). Contains Egg OR Soybean Oil, Water, Egg Yolks, Distilled Vinegar, Salt, Sugar, Mustard Flour, Lemon Juice Concentrate, Calcium Disodium EDTA (to protect flavor). Contains Egg) || Garlic Herb Butter ((Cream, Salt), Minced Garlic, Soy Sauce (Water, Wheat, Soybeans, Salt, Sodium Benzoate: Less than 1/10 of 1% as a Preservative), Granulated Garlic, Black Pepper, Salt, Parsley.) || Salt Packet (Salt, Sodium Silicoaluminate, Sodium Thiosulfate, Potassium Iodide.) || Sugar Cookie (Enriched Wheat Flour (Wheat Flour, Malted Barley Flour, Niacin, Reduced Iron, Thiamine Mononitrate, Riboflavin, Folic Acid), Confectionery Coating (Sugar, Palm Kernel And Palm Oil, Dry Whole Milk, Lactose, Emulsifier Blend [Soy Lecithin, Sorbitan Tristearate, Polyglycerol Polyricinoleate], Vanilla Extract, Color Added [Vegetable Juices, Riboflavin, Annatto Extract, Spirulina Extract], Nonfat Dry Milk), Margarine (Palm Oil, Water, Salt, Mono- And Diglycerides, Natural Flavor, Citric Acid [Preservative], Beta-Carotene [Color], Vitamin A Palmitate), Flavored Butter (Cream, Natural Flavor), Sugar, Invert Sugar, Fructose, Water, Sweetened Egg Yolks (Egg Yolks, Sugar), Egg Whites (Egg Whites, Triethyl Citrate), Stabilizing Blend (Soy Flour, Corn Syrup Solids, Wheat Gluten, Sodium Alginate, Soy Lecithin, Soybean Oil, Enzyme), Salt, Natural Flavor (With Annatto Extract [Color] And Turmeric [Color]). Contains Wheat, Soy, Egg, Milk. Made In A Bakery That Uses Peanut & Tree Nut)

Sources

Jack in the Box nutrition & ingredient source

Updated September 23, 2026. Recipes and availability may vary by location.

Menu category: Burgers