When it comes to satisfying sandwiches, few combinations are as irresistible as crispy fried chicken tucked inside fluffy focaccia bread with a generous spread of smoky romesco sauce. This Crispy Chicken & Romesco Sauce Focaccia Sandwich delivers everything you could want in a hearty meal: crunchy, juicy chicken, roasted red pepper and almond sauce, fresh vegetables, creamy cheese, and herb-infused focaccia that ties every bite together.
Perfect for lunch, dinner, picnics, or weekend gatherings, this sandwich transforms simple ingredients into something worthy of your favorite café. The crispy chicken is marinated in buttermilk for tenderness before being coated in seasoned flour and fried until beautifully golden. Meanwhile, the homemade romesco sauce adds rich Mediterranean flavors with roasted peppers, tomatoes, almonds, garlic, smoked paprika, and olive oil.
Whether you’re feeding family or impressing guests, this sandwich is guaranteed to become a favorite.
Why You’ll Love This Recipe
This focaccia sandwich offers the perfect balance of flavors and textures.
Extra crispy fried chicken
Juicy and tender inside
Homemade smoky romesco sauce
Soft, airy focaccia bread
Fresh vegetables for crunch
Easy enough for weeknights
Great for meal prep
Perfect for picnics and packed lunches
Restaurant-quality results at home
Customizable with your favorite toppings
Preparation Time
Prep Time: 25 minutes
Marinating Time: 1 hour (or overnight)
Cook Time: 20 minutes
Total Time: About 1 hour 45 minutes
Servings: 4 sandwiches
Ingredients
For the Chicken
2 large boneless, skinless chicken breasts
2 cups buttermilk
1 teaspoon salt
1 teaspoon black pepper
1 teaspoon garlic powder
1 teaspoon onion powder
1 teaspoon smoked paprika
Crispy Coating
2 cups all-purpose flour
½ cup cornstarch
1 teaspoon baking powder
1 teaspoon paprika
1 teaspoon garlic powder
½ teaspoon cayenne pepper (optional)
1 teaspoon salt
½ teaspoon black pepper
Vegetable oil, for frying
Homemade Romesco Sauce
2 roasted red bell peppers
1 medium roasted tomato
½ cup toasted almonds
1 garlic clove
2 tablespoons tomato paste
1 tablespoon red wine vinegar
1 teaspoon smoked paprika
¼ teaspoon chili flakes
â…“ cup extra virgin olive oil
Salt and pepper to taste
Sandwich Assembly
2 large focaccia loaves, sliced into four sandwich portions
4 slices fresh mozzarella
2 cups arugula
1 large tomato, sliced
Thinly sliced red onion
Fresh basil leaves
Olive oil for brushing
Optional:
Pickled onions
Sliced avocado
Parmesan shavings
Hot honey drizzle
Kitchen Equipment
Deep skillet or Dutch oven
Food processor or blender
Mixing bowls
Tongs
Wire cooling rack
Meat thermometer
Serrated knife
Step 1: Marinate the Chicken
Slice each chicken breast horizontally to create four even cutlets.
In a bowl, combine:
Buttermilk
Salt
Pepper
Garlic powder
Onion powder
Smoked paprika
Add the chicken and coat thoroughly. Cover and refrigerate for at least one hour, though overnight marinating produces the juiciest results.
The buttermilk tenderizes the chicken while helping the coating stick during frying.
Step 2: Make the Romesco Sauce
While the chicken marinates, prepare the sauce.
In a food processor combine:
Roasted peppers
Roasted tomato
Toasted almonds
Garlic
Tomato paste
Red wine vinegar
Smoked paprika
Chili flakes
Blend until mostly smooth.
Slowly drizzle in the olive oil while blending until the sauce becomes creamy yet slightly textured.
Season with salt and pepper to taste.
Refrigerate until needed to allow the flavors to develop.
Step 3: Prepare the Crispy Coating
In a large shallow bowl, whisk together:
Flour
Cornstarch
Baking powder
Paprika
Garlic powder
Cayenne
Salt
Pepper
The cornstarch creates an exceptionally crisp crust, while baking powder helps produce a light, crunchy coating.
Step 4: Coat the Chicken
Remove each chicken cutlet from the buttermilk, allowing excess marinade to drip off.
Press firmly into the seasoned flour mixture.
For extra crunch, dip the chicken back into the buttermilk briefly, then coat again in the flour mixture.
Press the coating gently onto every surface.
Allow the breaded chicken to rest for 10 minutes before frying. This helps the coating adhere during cooking.
Step 5: Fry Until Golden
Heat about 2 inches of vegetable oil to 350°F (175°C).
Carefully lower the chicken into the hot oil.
Fry for approximately 5–6 minutes per side until deeply golden brown and crispy.
The internal temperature should reach 165°F (74°C).
Transfer to a wire rack rather than paper towels to keep the crust crisp.
Step 6: Toast the Focaccia
Slice the focaccia into sandwich portions.
Brush the cut sides lightly with olive oil.
Toast in a skillet or oven for 3–4 minutes until lightly crisp while remaining soft inside.
The toasted bread holds the fillings without becoming soggy.
Step 7: Assemble the Sandwiches
Spread a generous layer of romesco sauce on both halves of each focaccia roll.
Layer in the following order:
Fresh arugula
Crispy chicken
Mozzarella slice
Tomato slices
Red onion
Fresh basil leaves
Top with another spoonful of romesco sauce if desired.
Close the sandwich gently and press lightly before serving.
Delicious Variations
One of the best things about this recipe is how easily it can be customized.
Spicy Version
Add hot sauce to the buttermilk marinade and mix chipotle peppers into the romesco sauce for a smoky heat.
Grilled Chicken
Swap fried chicken for grilled chicken breasts to create a lighter sandwich while keeping the bold romesco flavor.
Mediterranean Style
Include grilled zucchini, roasted eggplant, spinach, and crumbled feta for a Mediterranean-inspired twist.
Italian-Inspired
Replace mozzarella with burrata and add prosciutto, basil pesto, and sun-dried tomatoes.
Vegetarian Version
Use crispy breaded eggplant or thick slices of roasted cauliflower instead of chicken.
Pro Tips for Success
Always marinate the chicken for at least one hour to ensure maximum tenderness.
Toast the almonds before making the romesco sauce to deepen their nutty flavor.
Double-coat the chicken for an extra crunchy crust.
Let the fried chicken rest on a wire rack to maintain crispness.
Toast the focaccia just before assembling to enhance its texture.
Avoid overloading the sandwich with sauce, which can make the bread soggy.
Use fresh, high-quality olive oil for the romesco to achieve the richest flavor.
Serving Suggestions
This hearty sandwich pairs wonderfully with:
Crispy rosemary fries
Sweet potato wedges
Garlic roasted potatoes
Tomato soup
Fresh green salad
Coleslaw
Pickled vegetables
Marinated olives
For entertaining, slice each sandwich into halves or quarters and secure with sandwich picks for an elegant presentation.
Storage
Store leftover fried chicken in an airtight container in the refrigerator for up to 3 days.
Keep the romesco sauce refrigerated in a sealed jar for up to 5 days.
For the best texture, store all sandwich components separately and assemble just before serving.
Reheating
Reheat the chicken in a 375°F (190°C) oven or air fryer for 8–10 minutes until hot and crispy.
Avoid microwaving, as it softens the coating.
Toast the focaccia again before assembling for a freshly baked feel.
Nutritional Information (Per Sandwich)
Approximate values:
Calories: 780
Protein: 42 g
Carbohydrates: 58 g
Fat: 42 g
Saturated Fat: 9 g
Fiber: 5 g
Sodium: 980 mg
Frequently Asked Questions
Can I make the romesco sauce ahead of time?
Yes. In fact, it tastes even better after resting in the refrigerator for several hours or overnight, allowing the flavors to meld.
Can I bake the chicken instead of frying?
Absolutely. Bake the coated chicken on a wire rack at 425°F (220°C) for 25–30 minutes, flipping halfway through. Lightly spray the coating with oil before baking to encourage browning.
What other breads work well?
Ciabatta, sourdough rolls, artisan sandwich buns, or rustic baguettes all pair beautifully with the crispy chicken and romesco sauce. However, focaccia provides a uniquely airy texture and herbaceous flavor that complements the filling especially well.
Can I freeze the chicken?
Yes. Once cooked and cooled, freeze the fried chicken in an airtight container for up to two months. Reheat directly from frozen in the oven until hot and crispy.
Final Thoughts
This Crispy Chicken & Romesco Sauce Focaccia Sandwich is the perfect combination of comfort food and gourmet flavor. The juicy, crunchy chicken, smoky homemade romesco sauce, creamy mozzarella, peppery arugula, and soft toasted focaccia create a sandwich that is both satisfying and unforgettable. Ideal for lunches, casual dinners, picnics, or weekend entertaining, it brings together fresh Mediterranean-inspired ingredients with classic crispy fried chicken for a meal that feels both rustic and refined. Once you’ve tried this recipe, it’s sure to earn a permanent place in your collection of favorite homemade sandwiches.
