Jack In The Box Sourdough Jack Sandwich Recipe

You probably love burgers from your favorite fast-food places. Jack in the Box makes a Sourdough Jack that tastes really good. The only problem is, every time you want one, you have to go out and buy it.

That’s why I started making my own copycat recipes at home. Cooking fast-food meals in my kitchen helps me save money. It also lets me choose every ingredient I use.

The Sourdough Jack is one of my favorite recipes because it has a rich, buttery bread, a juicy beef patty, and a creamy sauce that all taste amazing together. This recipe is very close to the one from Jack in the Box, and most people can’t tell the difference.

Today, I’m sharing this copycat recipe so you can enjoy the Jack In The Box Sourdough Jack Sandwich Recipe at home without going to the restaurant. Once you try this homemade version, you may not want to buy it again.

Why Is the Sourdough Jack So Popular

• The Unique Sourdough Bread : The thick-cut sourdough is toasted on both sides, making it sturdy enough to hold all the toppings without falling apart. The slight tartness of the bread complements the beef perfectly.
• Crispy Grilled Texture : When the beef hits a hot cast iron skillet, it develops a golden brown crust that seals in all the juices and flavors. This crust is key to making it taste like the real thing.
• Balanced Flavor Profile : Every ingredient has a purpose. The mayo adds creaminess, the ketchup brings sweetness, the bacon adds smokiness, and the cheese ties everything together in perfect harmony.
• Fast-Food Nostalgia : Many people grew up eating these sandwiches, and making them at home brings back those happy memories. Plus, homemade versions taste even better because you control the quality of each ingredient.

Jack In The Box Sourdough Jack Sandwich Ingredients

For the Beef Patty & Seasoning:

• Ground Beef (80/20 blend): Use 1/4 pound per sandwich for juicy, flavorful patties. This balance prevents dryness or greasiness. Fresh butcher meat works best. Substitute 85/15 for a slightly leaner but less juicy burger.
• Lawry’s Seasoned Salt: Use 1/4 teaspoon per patty. Adds classic fast-food flavor with garlic, onion, and paprika. Enhances beef taste beyond plain salt. Substitute with a mix of 1/8 teaspoon salt, 1/8 teaspoon garlic powder, and a pinch of black pepper.
• Fresh Black Pepper: Use a small pinch (or to taste) per patty. Freshly cracked pepper adds stronger, more aromatic flavor than pre-ground versions. Grind just before cooking for best taste.
• Salt and Pepper (to taste): Adjust seasoning after assembling the sandwich to suit your preference. Add gradually and taste before serving.

For the Bread, Filling & Assembly:

• Sourdough Bread Slices: Use 1 slice per sandwich (about 1/2 inch thick). Thick slices provide structure and tangy flavor. Substitute with Texas toast, ciabatta, or thick white bread.
• Butter: Use 1 teaspoon per sandwich for toasting bread. Helps create a golden, crisp texture and adds rich flavor. Substitute with oil or cooking spray if needed.
• Cheddar Cheese Slices: Use 1 slice per sandwich. Sharp cheddar adds bold flavor and melts nicely. Substitute with American, Jack, or pepper jack cheese.
• Bacon Strips: Use 2 strips per sandwich, cooked until very crisp. Adds salty crunch and balances texture. Substitute with turkey bacon or plant-based options.
• Fresh Tomato Slices: Use 2 to 3 slices per sandwich. Choose ripe but firm tomatoes to avoid excess moisture.
• Mayonnaise: Use 1 tablespoon per sandwich. Adds creamy richness when spread on one bread side. Substitute with light mayo or yogurt-based options.
• Ketchup: Use 1 tablespoon per sandwich. Provides sweet and tangy balance. Substitute with tomato sauce or a quick mix of tomato paste, vinegar, and sugar.

Kitchen Tools Needed

1. Skillet or Cast Iron Pan – For grilling burger and bread.
2. Spatula – To flip patties easily.
3. Small Bowl – For mixing sauces or seasoning.
4. Measuring Spoons & Cups – Accurate ingredient measurement.
5. Knife – For slicing tomato and bacon.
6. Wax Paper or Foil – To shape and prep burger patty.

How to Make Jack In The Box Sourdough Jack Sandwich

Step 1 | Prepare the Beef Patty

Divide the ground beef into two equal portions. Roll each into a loose ball without packing it tightly.

Place between wax paper and press down firmly with a flat object. Make the patty larger than the bread since it will shrink during cooking.

Step 2 | Season the Patty

Just before cooking, sprinkle seasoned salt and black pepper evenly on both sides of each patty. Avoid seasoning too early to keep the meat juicy.

Step 3 | Toast the Sourdough Bread

Spread butter on one side of each bread slice. Heat a skillet over medium heat and place the bread butter-side down. Toast until golden brown, about 2 minutes. Lightly toast the other side as well, then set aside.

Step 4 | Cook the Bacon

In the same skillet, cook the bacon until crispy, about 5–6 minutes. Turn occasionally for even cooking. Remove and place on paper towels, then break into smaller pieces.

Step 5 | Cook the Beef Patties

Increase the heat to high until the skillet is very hot. Place the patties in the pan and do not move them for about 2 minutes to form a crust. Flip carefully and cook for another 2 minutes.

Step 6 | Add Cheese

After flipping the patties, place a slice of cheese on each one. Let it melt for about 30 seconds while the meat finishes cooking.

Step 7 | Assemble the Sandwich Base

Take one slice of toasted sourdough and place cheese on it. Add the cooked beef patty on top, followed by bacon pieces and tomato slices.

Step 8 | Add Sauce and Top Bread

Spread mayo on one side of the second bread slice and ketchup on another section. Place it on top of the sandwich and press gently.

Step 9 | Serve Immediately

Serve the sandwich right away while it is warm and crispy for the best flavor and texture.

Pro Tips for Authentic Restaurant Flavor

• Handle the meat gently: Keep the beef loose when forming patties. Overworking it makes the burger dense instead of soft and juicy.
• Start with a smoking hot pan: Your skillet should be very hot before the patty goes in. This creates a deep golden crust and locks in flavor.
• Season at the last moment: Add salt and seasoning right before cooking—not earlier—so the meat stays juicy and doesn’t dry out.
• Don’t overcook the patty: Aim for medium doneness. Overcooking removes juiciness and makes the burger tough.

Variations & Customizations

Spicy Sourdough Jack : Add 1 tablespoon of hot sauce or sriracha to the mayonnaise. Include a slice of jalapeño pepper between the cheese and the patty. Add pepper jack cheese instead of regular American cheese for extra heat. Top with 1/2 teaspoon of red pepper flakes sprinkled on the meat before cooking.

Sourdough Smash Burger : Use two 2 oz beef patties instead of one 4 oz patty. Smash both patties very thin in the hot skillet. Layer them with cheese in between the two patties for a double-patty effect. This gives you more crispy edges and concentrated flavor throughout.

Chicken or Turkey Sourdough Sandwich : Replace the beef with a 4 oz chicken breast pounded thin or ground turkey formed into a patty. Season with Lawry’s salt just like the beef. Cook for 3–4 minutes per side until fully cooked through. Add lettuce, tomato, and a light mayo spread instead of ketchup.

Vegan/Vegetarian Options : Use a 4 oz plant-based burger patty or a portobello mushroom cap instead of beef. Marinate the mushroom in olive oil and Lawry’s salt for 15 minutes before cooking. Cook in the hot skillet for 2–3 minutes per side. Add vegan cheese if desired for extra richness and texture.

Add-On Toppings : Try adding grilled onions, sautéed mushrooms, pickles, crispy lettuce, or avocado slices. Add a fried egg on top for a breakfast version. Use different cheeses like Swiss, cheddar, or pepper jack. Drizzle with BBQ sauce or special sauce instead of ketchup and mayo.

What to Serve with Sourdough Jack Sandwich

I like to serve this sandwich with crispy fries or onion rings for a classic combo. You can also try potato wedges or a simple salad for a lighter side.

When you order it at Jack in the Box, it often comes with fries and a drink. At home, you can mix and match based on what you like.

I sometimes add a cold soda or iced tea to complete the meal. You can choose your favorite sides to match your taste and mood.

Meal Prep Tips

Plan ahead to make cooking faster. The night before, shape your burger patties, wrap them, and store them in the fridge so they stay firm. You can also cook the bacon and tomatoes ahead of time and reheat them when needed.

On cooking day, slice your sourdough bread and set out all your toppings. Keep everything like butter, mayo, ketchup, cheese, and seasoning in one place. This simple setup helps you cook quickly. Heat your skillet before you start, and your meal will be ready in about 15 minutes.

Storage & Reheating Tips

How to Store Leftovers: Keep any leftover burger components in separate containers in the refrigerator. Store the patty and toppings apart from the bread to prevent sogginess. Everything stays fresh for 2-3 days in an airtight container.

How to Reheat Without Soggy Bread: Never reheat the assembled sandwich. Instead, reheat the patty in a skillet over medium heat for 2 minutes per side. Warm the bacon in a microwave or skillet. Toast the bread fresh in a skillet with a little butter. Then assemble everything again with fresh mayo and ketchup.

Freeze Components: You can freeze uncooked beef patties for up to 3 months when wrapped tightly. Freeze bacon cooked for about 4 weeks. Bread and toppings don’t freeze well. Thaw frozen patties in the fridge overnight before cooking.

Jack In The Box Sourdough Jack Sandwich Recipe FAQs

1. Is it okay to cook the patty to different doneness?

Yes, the patty can be cooked to preferred doneness. Some people like it slightly pink inside, while others prefer it fully cooked.

Adjust cooking time based on thickness and heat level. Always ensure safe cooking temperatures are followed when preparing ground meat to maintain food safety.

2. What sauces work best for this recipe?

The classic version uses mayonnaise and ketchup. These two simple sauces create a balanced taste with creamy and slightly sweet notes.

Other options like mustard or burger sauce can also be added for variation. Keeping the sauce simple helps match the original flavor of the sandwich.

3. Can I make this sandwich dairy-free?

Yes, use dairy-free cheese and vegan butter for toasting the bread. Skip the mayo or use a plant-based version.

The rest of the ingredients like beef, bacon, and tomato are naturally dairy-free. The sandwich still tastes great with these swaps.

4. Is this recipe budget-friendly?

Yes, this recipe uses simple and affordable ingredients. Making it at home costs less than buying it outside.

Ingredients like ground beef, bread, and basic sauces are easy to find and budget-friendly. It also allows control over portion size and quality.

Continue to Content

Jack In The Box Sourdough Jack Sandwich Recipe

Yield: 2 sandwiches

Prep Time: 10 minutes

Cook Time: 15 minutes

Total Time: 25 minutes

Enjoy a homemade Jack In The Box Sourdough Jack Sandwich Recipe ready in 25 minutes with buttery bread, beef patty, and simple toppings.

Print

Ingredients

• 8 oz ground beef (80/20 blend), divided into 2 portions
• 1/2 teaspoon Lawry’s seasoned salt
• 1/2 teaspoon fresh black pepper
• 4 slices sourdough bread (1/2-inch thick)
• 2 tablespoons butter (for toasting bread)
• 2 slices cheddar cheese
• 4 strips bacon
• 1 medium tomato, sliced
• 2 tablespoons mayonnaise
• 2 tablespoons ketchup
• Salt and pepper, to taste

Instructions

1. Divide the ground beef into two equal portions. Roll each into a loose ball without packing it tightly. Place between wax paper and press down firmly with a flat object. Make the patty larger than the bread since it will shrink during cooking.
2. Just before cooking, sprinkle seasoned salt and black pepper evenly on both sides of each patty. Avoid seasoning too early to keep the meat juicy.
3. Spread butter on one side of each bread slice. Heat a skillet over medium heat and place the bread butter-side down. Toast until golden brown, about 2 minutes. Lightly toast the other side as well, then set aside.
4. In the same skillet, cook the bacon until crispy, about 5–6 minutes. Turn occasionally for even cooking. Remove and place on paper towels, then break into smaller pieces.
5. Increase the heat to high until the skillet is very hot. Place the patties in the pan and do not move them for about 2 minutes to form a crust. Flip carefully and cook for another 2 minutes.
6. After flipping the patties, place a slice of cheese on each one. Let it melt for about 30 seconds while the meat finishes cooking.
7. Take one slice of toasted sourdough and place cheese on it. Add the cooked beef patty on top, followed by bacon pieces and tomato slices.
8. Spread mayo on one side of the second bread slice and ketchup on another section. Place it on top of the sandwich and press gently.
9. Serve the sandwich right away while it is warm and crispy for the best flavor and texture.

Nutrition Information:

Serving Size: (Per Serving)
Amount Per Serving: Calories: 720Total Fat: 48gSaturated Fat: 20gCholesterol: 115mgSodium: 980mgCarbohydrates: 32gFiber: 2gSugar: 6gProtein: 38g

This Jack In The Box Sourdough Jack Sandwich Recipe lets you enjoy the classic taste at home with simple steps and everyday ingredients. The toasted bread, juicy patty, and melted cheese come together perfectly.

Try this recipe soon and share your results with a friend who loves fast-food favorites.