Chicken Finger Sub Recipe: Crunchy Bites in a Soft Roll

This chicken finger sub brings together crispy breaded tenders and soft rolls for the ultimate handheld meal.

I’ve refined the technique to ensure every bite delivers maximum crunch and juicy flavor. The secret lies in a double-dipping breading process and precise frying temperature.

The assembly is simple: pile the hot chicken fingers onto a buttered sub roll, add your favorite sauce, and top with shredded lettuce for freshness.

This dish turns a classic comfort food into a satisfying, restaurant-worthy sandwich.

Ingredients for Chicken Finger Sub

Crispy chicken, soft rolls, and a handful of pantry staples make this sandwich shine.

The breading is everything here. Panko breadcrumbs give that restaurant-level crunch you can’t get from regular crumbs. I grab mine from Whole Foods or the Asian aisle at Kroger—both have great quality. For the chicken, boneless, skinless breasts are easiest, but thighs work too if you prefer darker meat (just trim any excess fat first).

No buttermilk? Whole milk plus a tbsp of lemon juice or vinegar gets you close. Swap panko for crushed cornflakes or Ritz crackers in a pinch. Want extra flavor? Add one-third the amount of cayenne to the breading mix. The sub rolls can be any soft hoagie-style—Publix or Subway brands are solid.

Fry the chicken in batches to avoid overcrowding (keeps the oil temp steady). Leftovers keep in the fridge for 2-3 days—reheat in the oven to stay crispy. Freeze uncooked breaded tenders for up to 3 months (thaw before frying).

Step-by-Step Instructions for Chicken Finger Subs

Here’s the method I use to get maximum crunch with every bite.

Step 1: Prep and Season the Chicken Strips

Cut the boneless skinless chicken breasts into 1-inch wide strips. Pat them completely dry with paper towels—moisture is the enemy of crispy coating. I always take this extra moment to ensure each piece is uniform in size.

In a shallow dish, whisk together the all-purpose flour, cornstarch, salt, black pepper, garlic powder, and paprika. This flour mixture creates the first layer of your coating and adds serious flavor. The cornstarch is my secret for extra crunch.

Step 2: Create the Breading Station

Set up your breading station with three shallow dishes. Place the seasoned flour mixture in the first dish. Pour the buttermilk into the second dish. In the third dish, beat the large eggs, then stir in the panko breadcrumbs until fully combined.

Working with one piece at a time, dredge each chicken strip in the seasoned flour, shaking off any excess. Then dip it in the buttermilk, letting any excess drip off. Finally, press it firmly into the panko-egg mixture, ensuring it’s completely coated on all sides. This triple-coating method guarantees that crispy texture.

Step 3: Fry to Golden Perfection

Heat the vegetable oil in a deep, heavy-bottomed pot to 350°F. Use a thermometer for accuracy—this temperature is crucial. The oil should be deep enough to submerge the chicken strips completely.

Carefully lower 3-4 breaded chicken strips into the hot oil. Don’t overcrowd the pot or the temperature will drop. Fry for 4-5 minutes until golden brown and crispy on all sides. The internal temperature should reach 165°F. Transfer to a paper towel-lined plate to drain.

Step 4: Toast the Sub Rolls and Assemble

Spread the unsalted butter on the cut sides of the sub rolls. Heat a skillet over medium heat and toast the rolls, butter-side down, for 1-2 minutes until golden brown. This adds a delicious buttery crunch to complement the chicken.

Spread mayonnaise on both sides of each toasted sub roll. Place a generous portion of shredded lettuce on the bottom half of each roll. Arrange 3-4 chicken fingers on top of the lettuce, then cap with the top half of the roll. Serve immediately while the chicken is still hot and crispy.

Troubleshooting This Dish

Oil Temperature Drops

If your chicken comes out greasy instead of crispy, your oil temperature likely dropped too low. Use a thermometer to maintain 350°F and fry in small batches to prevent overcrowding. I keep a Taylor digital thermometer clipped to my pot for constant monitoring.

Breading Falls Off

The coating slides off when the chicken isn’t dry before breading. Pat pieces completely dry with paper towels and let them rest 5 minutes after buttermilk dip. Press firmly into the panko mixture to ensure adhesion.

Uneven Cooking

Chicken strips should be uniform in thickness—about ½ inch. Cut thicker pieces in half lengthwise. If some cook faster, remove them early and keep warm in a 200°F oven while finishing the batch. 🌡️

Soggy Sub Rolls

Toast rolls just before assembly to prevent sogginess. Butter and toast on medium heat for 1-2 minutes until golden. Assemble subs immediately and serve open-faced if not eating right away.

Dry Chicken

Overcooking is the culprit. Pull strips when they reach 165°F internal temperature—this takes 4-5 minutes at proper oil temp. Use a meat thermometer for accuracy. Resting 2 minutes on a rack keeps them juicy.

Sauce Soaks Rolls

Spread sauces sparingly or serve them on the side for dipping. For assembled subs, layer lettuce first to create a barrier. I use mayonnaise as a base—it sticks better than thinner sauces. 💡

Frequently Asked Questions