If you’ve ever dreamed of a sandwich that perfectly balances savory, fresh, and a touch of indulgence, then you’re going to fall head over heels for The Ultimate Focaccia Sandwich with Roast Chicken Filling Recipe. This is not just any sandwich – it’s a harmonious stack of tender roast chicken tossed in a tangy mayo-mustard blend, layered with crisp arugula, sweet roasted red peppers, and melty provolone, all nestled between slices of soft, golden focaccia. Whether you’re feeding a hungry crowd or craving an elevated lunch, this recipe delivers all the flavor and comfort you could want, wrapped up in the best Italian-inspired bread around.

Ingredients You’ll Need
The magic of this sandwich lies in its simplicity. Each ingredient plays a critical role, from the fluffy focaccia that gives you that perfect chew, to the zesty dressing that dresses the chicken just right. Here’s what you’ll want on hand to get started:
- 1 large focaccia loaf, sliced horizontally: The soft, airy bread is essential for soaking up all the flavors without falling apart.
- 2 cups shredded roast chicken (store-bought or homemade): The star protein that brings savory satisfaction and heartiness.
- ¼ cup mayonnaise: Adds creaminess and balances the tang of the mustard and lemon.
- 1 tablespoon Dijon mustard: Brings a gentle kick and depth to the chicken filling.
- 1 tablespoon lemon juice: A splash of brightness that wakes up all the flavors.
- ½ teaspoon garlic powder: Subtle warmth that complements the savory chicken.
- Salt and black pepper to taste: Essential seasonings to enhance every bite.
- 1 cup baby arugula or spinach: Provides a fresh, peppery crunch and color contrast.
- ½ cup roasted red peppers, sliced: Sweet and smoky, adding complexity and moisture.
- 4 slices provolone or mozzarella cheese: Melts beautifully and ties all the ingredients together.
- ¼ small red onion, thinly sliced: Offers a sharp, crisp bite for balance.
- 1 tablespoon olive oil (for brushing): Adds sheen, flavor, and helps crisp the top if you choose to warm the sandwich.
How to Make The Ultimate Focaccia Sandwich with Roast Chicken Filling Recipe
Step 1: Prepare the Chicken Mixture
Start by tossing your shredded roast chicken into a bowl with mayonnaise, Dijon mustard, fresh lemon juice, garlic powder, salt, and black pepper. This mixture becomes the flavor-packed heart of your sandwich, blending creamy, tangy, and savory notes that make every bite memorable. Take a moment here to mix everything thoroughly so every shred of chicken is nicely coated.
Step 2: Assemble the Sandwich Layers
Place the bottom half of your focaccia on a sturdy cutting board. Pile on the chicken mixture first, spreading it evenly to cover the bread. Next, layer on the baby arugula or spinach for a lively crunch and a burst of green freshness. Then come the roasted red peppers, their smoky sweetness playing beautifully off the other ingredients. Follow that with the slices of provolone or mozzarella cheese, and finally, scatter the thinly sliced red onion over the top to add that exciting pop of sharpness.
Step 3: Top and Finish
Carefully place the remaining focaccia half over your stacked filling. Brush the top with olive oil – this not only adds a subtle fruity richness but enhances the crust’s beautiful golden color if you decide to warm it. For an extra special touch, you can heat the sandwich in a 350°F oven for 5 to 7 minutes until the cheese just melts and the bread crisps lightly. This step is optional, but it truly elevates the whole experience.
Step 4: Slice and Serve
Once your sandwich is assembled (and optionally warmed), slice it into portions that suit you, whether for a casual lunch or a more polished gathering. The layers will hold together beautifully, making every bite a perfect balance of textures and bold flavors. Enjoy at room temperature for freshness or warm for melty comfort!
How to Serve The Ultimate Focaccia Sandwich with Roast Chicken Filling Recipe

Garnishes
A sprinkle of fresh herbs like basil or parsley adds a delightful burst of color and freshness that complements the sandwich’s savory nature. For a little extra zing, consider a drizzle of balsamic glaze or a few cracked black peppercorns on top. These garnishes make your sandwich look as incredible as it tastes.
Side Dishes
This sandwich pairs wonderfully with light sides like a crisp green salad or a bowl of homemade tomato soup to keep the meal balanced and vibrant. For a heartier option, consider roasted potatoes or a Mediterranean couscous salad, which echoes the Italian vibe and adds more texture and flavor to the plate.
Creative Ways to Present
Serve the sandwich cut into small sliders for a crowd-friendly appetizer or picnics. Wrap each sandwich half in parchment paper and tie with twine for a rustic, charming presentation that makes it perfect for lunch on the go or a casual brunch spread.
Make Ahead and Storage
Storing Leftovers
This sandwich tastes best fresh, but if you have leftovers, wrap them tightly in foil or plastic wrap and store in the refrigerator for up to one day. Keep in mind that the focaccia might soften slightly overnight as it absorbs moisture from the filling, so a quick re-toast can revive the texture.
Freezing
While not ideal to freeze fully assembled due to the fresh ingredients, you can freeze the shredded roast chicken mixture separately in an airtight container for up to one month. Thaw it overnight in the fridge before assembling your sandwich for convenience and freshness.
Reheating
If you stored a pre-warmed sandwich or leftovers, reheat in a 350°F oven for 5 to 7 minutes to gently melt the cheese and crisp the focaccia again. Avoid microwaving as it can turn the bread chewy and the cheese rubbery.
FAQs
Can I use another type of bread instead of focaccia?
Absolutely! While focaccia is ideal for its texture and flavor, ciabatta or a crusty baguette can work nicely if focaccia isn’t available. Just be mindful of how the bread holds up to the moist filling.
What can I substitute for mayo in the chicken mixture?
You can swap mayonnaise for Greek yogurt for a lighter, tangier option or use a dairy-free spread if preferred. Adjust seasonings to maintain balance.
Is it possible to make this sandwich vegetarian?
Definitely! Replace the roast chicken with grilled vegetables, marinated tofu, or even a chickpea salad to keep the delightful flavors and textures without meat.
How can I make the sandwich spicier?
Add thin slices of pickled jalapeños, a few dashes of hot sauce to the chicken mixture, or sprinkle crushed red pepper flakes for a gentle heat kick.
Can I prepare parts of this sandwich ahead of time?
Yes, you can prepare the chicken filling a day ahead to deepen the flavors and slice your veggies in advance. Assemble just before serving to keep the bread from getting soggy.
Final Thoughts
If you’re craving a sandwich that truly celebrates bold flavors and satisfying textures, The Ultimate Focaccia Sandwich with Roast Chicken Filling Recipe is your new go-to. It’s effortless to make yet impressive enough to feel special, perfect for lunches, casual dinners, or sharing with friends. Don’t hesitate one moment longer – gather your ingredients and treat yourself to this delicious Italian-inspired delight. You’ll be so glad you did.
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The Ultimate Focaccia Sandwich with Roast Chicken Filling Recipe
- Prep Time: 15 minutes
- Cook Time: 5 minutes (optional warming)
- Total Time: 20 minutes
- Yield: 4 servings
- Category: Main Course, Sandwich
- Method: Assembling, Baking
- Cuisine: Italian-Inspired
Description
This Ultimate Focaccia Sandwich with Roast Chicken Filling is a flavorful and hearty Italian-inspired main course perfect for lunch or a light dinner. It features tender shredded roast chicken mixed with a tangy mayonnaise and mustard blend, layered with fresh baby arugula or spinach, roasted red peppers, melty provolone or mozzarella cheese, and thinly sliced red onions inside a rustic focaccia bread. Optionally warmed, this sandwich delivers a perfect balance of savory, fresh, and zesty flavors with a satisfying texture that can be customized or enjoyed fresh.
Ingredients
Sandwich Ingredients
- 1 large focaccia loaf, sliced horizontally
- 2 cups shredded roast chicken (store-bought or homemade)
- ¼ cup mayonnaise
- 1 tablespoon Dijon mustard
- 1 tablespoon lemon juice
- ½ teaspoon garlic powder
- Salt and black pepper to taste
- 1 cup baby arugula or spinach
- ½ cup roasted red peppers, sliced
- 4 slices provolone or mozzarella cheese
- ¼ small red onion, thinly sliced
- 1 tablespoon olive oil (for brushing)
Instructions
- Prepare Chicken Mixture: In a bowl, thoroughly combine the shredded roast chicken with mayonnaise, Dijon mustard, lemon juice, garlic powder, salt, and pepper until well mixed and evenly seasoned.
- Assemble the Sandwich: Place the bottom half of the focaccia loaf flat on a cutting board. Layer evenly with the prepared chicken mixture, then add the baby arugula or spinach, followed by roasted red peppers, cheese slices, and thinly sliced red onion for added crunch and flavor.
- Complete and Brush: Place the top half of the focaccia loaf over the layered ingredients. Lightly brush the top of the sandwich with olive oil to add richness and help crisp the bread if warming.
- Optional Warming: For a melted cheese finish and lightly crisped focaccia, warm the assembled sandwich in a preheated oven at 350°F (175°C) for 5–7 minutes until the cheese softens and the bread turns golden.
- Serve: Slice the sandwich into desired portions and serve warm right away or at room temperature for a fresh, satisfying meal.
Notes
- Customize the filling by adding pesto, sun-dried tomatoes, or avocado for extra flavor and texture.
- To make a vegetarian version, substitute the roast chicken with grilled vegetables or marinated tofu.
- Best enjoyed fresh but can be wrapped tightly and stored in the refrigerator for up to 1 day without losing quality.

