Jimmy John's Recipe: Copycat Subs With Buttery Toasted Bread

Mastering Jimmy John's copycat subs at home delivers that signature buttery toasted bread and perfectly balanced flavors you crave. The secret lies in a precise bread prep method—lightly buttering slices and toasting them just enough to create that crispy-yet-soft texture without drying out.

I perfected this technique after years of experimenting with sandwich bread, and it never fails to impress.

This recipe focuses on recreating their classic grilled chicken sub, where tender chicken breast is marinated in a blend of spices and herbs, then grilled to juicy perfection. The toppings—crisp lettuce, ripe tomato, and a creamy mayo-based spread—come together in layers that stay fresh even after cutting.

What makes this copycat version stand out is the attention to detail in each component, ensuring every bite tastes like the real thing.

By the time you assemble your sandwich, you'll have a sub with golden, buttery toasted bread that holds up to every layer, juicy grilled chicken that falls apart slightly, and crisp vegetables that add freshness.

The sauce ties everything together with that familiar tangy-sweet balance. This is the kind of sandwich that transforms a simple lunch into something special—no store-bought shortcuts needed.

Pair it with a homemade version of their signature lemonade for the full experience. The recipe scales easily, so you can make one for yourself or feed a crowd. Let’s get started on recreating this iconic sub at home.

Ingredients for jimmy john's

Buttery bread, juicy chicken, and crisp toppings—here's the exact ingredient lineup for Jimmy John's copycat subs.

The bread makes or breaks this. Sara Lee Classic White or Wonder White are the gold standard—thin slices, no crusts. Toasting is key: butter lightly, toast just until golden, then flip for that signature crispy-yet-soft texture. Costco sells pre-sliced loaves if you're lazy, but fresh is always better. For the chicken, Trader Joe's sells pre-pounded breasts—saves time without sacrificing quality. Look for plump, juicy breasts with good marbling, not those dry, stringy ones.

No fresh cilantro? Dried works at half the amount, but it won't have that same bright kick. The mayo must be good—Hellmann's or Duke's are reliable, but nothing beats homemade. Short on tomatoes? Heirloom or Roma hold up better than slicers when grilling. The garlic marinade can be prepped ahead—just store it in the fridge for up to 2 days. Want extra flavor? Add a pinch of Worcestershire sauce to the marinade. And yes, you can use iceberg lettuce—it's what they use in the stores.

Butter stays fresh 2 weeks at room temp if sealed tight. Bread? Toast it fresh or it gets soggy—10 minutes max in the toaster. The chicken marinade keeps 3 days in the fridge, but the longer it sits, the more flavor it absorbs. For assembly, layer mayo first, then chicken, then veggies—press gently so everything sticks. These subs reheat surprisingly well—30 seconds in a pan with a splash of water revives that toasted bread magic.

Step-by-step instructions for Jimmy John's copycat subs

Here's how to recreate that iconic buttery, toasted bread and perfectly seasoned chicken at home.

In a small bowl, whisk together the 0.5 cup mayonnaise, 2 tbsp yellow mustard, 1 tbsp lemon juice, 0.5 tsp onion powder, 0.5 tsp paprika, 1.5 tsp salt, and 1 tsp black pepper. This marinade is the secret to that signature Jimmy John's flavor—tangy, slightly sweet, and perfectly balanced.

Place the 1.5 lb boneless skinless chicken breast between two sheets of plastic wrap. Using a meat mallet, pound each breast to an even ½-inch thickness. This ensures even cooking and maximum tenderness. The reason we pound it so thin is that Jimmy John's chicken cooks fast on their grills—we're replicating that quick cook time at home. Once pounded, place the chicken in a resealable bag, pour the marinade over it, and massage it into every surface. Seal the bag and refrigerate for at least 30 minutes (or up to 4 hours for deeper flavor).

Preheat a grill or grill pan over medium-high heat. Heat the 0.25 cup olive oil in a small bowl and brush it lightly over the marinated chicken breasts—just enough to coat without making them greasy. The oil helps create that beautiful grill sear while keeping the chicken moist.

Place the chicken on the grill and cook for 3-4 minutes per side, until the internal temperature reaches 165°F and the chicken is no longer pink in the center. You'll know it's ready when it releases easily from the grill grates and has those beautiful grill marks. Let the chicken rest for 5 minutes before slicing—this is crucial for juicy results. Once rested, slice the chicken into ¼-inch thick strips against the grain for maximum tenderness.

Toast the 12 slices white sandwich bread lightly in a dry skillet over medium heat for 30 seconds per side until golden and slightly crisp. The butter will come later—this step just gives the bread that signature toasted texture. While the bread toasts, prepare your toppings: shred the 4 cups fresh lettuce into bite-sized pieces, slice the 1 lb ripe tomatoes into thin rounds, and finely chop the 0.25 cup fresh cilantro.

Here's where the magic happens: spread 0.25 cup softened unsalted butter generously on each slice of toasted bread. The butter should be soft enough to spread easily but not melted—this creates that iconic buttery crust without making the bread soggy. Layer 3 slices of bread with butter on the bottom, then add ¼ of the sliced chicken, 1 cup shredded lettuce, ¼ of the sliced tomatoes, and ¼ of the chopped cilantro. Top with another 3 slices of buttered bread to complete your sub.

Heat a clean skillet over medium heat and place your assembled sub in the pan. Press down gently with a spatula to help the bread absorb the butter and toast evenly. Cook for 2-3 minutes per side, until the bread is deep golden brown and the butter has melted into a glossy, crispy layer. The reason we toast it this way is to create that signature Jimmy John's texture—crispy outside, soft inside, with that buttery sheen.

Cut each sub diagonally into two triangles and serve immediately. The bread should be warm and crisp, the chicken juicy and flavorful, and every bite should deliver that perfect balance of textures and tastes that makes Jimmy John's subs legendary. Real talk: the first time you make this, you might be tempted to skip the butter toasting—but trust me, that final step is what makes this copycat recipe authentic.

Best sauces and condiments for this jimmy john's

Classic Mayo Sauce

This tangy mayo blend is the heart of every Jimmy John's sub. Mix ½ cup mayonnaise with 2 tbsp yellow mustard and 1 tbsp lemon juice for that signature sweet-tangy kick. For extra depth, add ½ tsp onion powder and ½ tsp smoked paprika.

I like to whisk it in a small bowl until smooth—this sauce should coat the back of a spoon but still spread easily. 🥛

Spicy Mustard Variant

Craving heat? Swap the yellow mustard for Dijon mustard and add ½ tsp cayenne pepper or 1 tsp hot sauce. This version works perfectly with the turkey sub, cutting through the richness.

I keep a small jar of this spicy mix in my fridge for quick customization—just stir it in right before assembling. The key is balancing the heat with enough mayo to keep it creamy.

Grilled Onion Topping

For a smoky twist, caramelize 1 large yellow onion in 1 tbsp olive oil over medium-low heat for 15-20 minutes until golden. Slice thinly and add to any sub—especially the bacon club. The sweetness of the caramelized onions pairs beautifully with the smoky bacon and buttery bread.

I like to make a big batch and store it in the fridge for up to 5 days.

Pickle Juice Drizzle

This is my secret weapon for adding that signature tang. Mix 2 tbsp pickle juice with 1 tsp honey and drizzle it over the assembled sub before toasting. The acidity cuts through the richness of the chicken and butter, giving it that signature Jimmy John's punch.

I keep a small bottle of this mix in my fridge—just shake it up before using. 🌶️

Creamy Avocado Spread

For a healthier twist, mash ½ ripe avocado with 2 tbsp Greek yogurt, 1 tbsp lime juice, and a pinch of salt. This spread adds creaminess without the mayo and works perfectly on veggie subs.

The avocado gives a buttery texture while keeping it lighter—plus, it adds a fresh, slightly sweet note that balances the tangy sauce. Store this in an airtight container with plastic wrap pressed directly on the surface to prevent browning.

Hot Honey Glaze

Heat ¼ cup honey in a small saucepan with ½ tsp cayenne pepper and 1 tsp apple cider vinegar until it reaches 160°F. Drizzle this over the finished sub for a sweet-spicy finish.

It’s especially good on the bacon club or turkey sub, where the heat and sweetness complement the smoky flavors. I like to make a big batch and store it in a sterilized jar in the fridge for up to 2 weeks. 🔥

Frequently asked questions