
The blend of textures and Mediterranean tastes mix beautifully in this special focaccia sandwich, with crunchy panko chicken meeting bold romesco sauce and garlicky parmesan butter. This isn't your average chicken sandwich - it's a thoughtfully designed combo that turns basic ingredients into an unforgettable meal that's perfect for outdoor gatherings or fancy lunch dates.
I made these for my backyard get-together this past Sunday, and everyone kept talking about the romesco sauce. What's my trick? I use store-bought roasted red peppers to save time without losing any taste.
Key Ingredients and Picking Tips
- Chicken Breasts: Look for similar-sized pieces so they cook evenly
- Focaccia: Good quality bread really makes a difference here
- Panko Breadcrumbs: The Japanese style gives you that amazing crunch
- Roasted Red Peppers: The jarred kind work great for reliable flavor
- Sun-dried Tomatoes: They add deep savory notes to the romesco
- Fresh Herbs: Parsley adds a fresh kick to the garlic butter
Building Your Sandwich Step by Step
- 1. Getting the Chicken Ready
- Cut breasts flat for thin cutlets, Set up flour-egg-breadcrumb stations, Keep oil at the right heat for crispy coating
- 2. Making Your Sauces
- Mix romesco stuff until it's smooth, Combine herb butter well, Whip up the creamy dressing for greens
- 3. Putting It All Together
- Brown focaccia with the garlic butter and cheese, Stack everything in the right order, Wrap it up carefully if you're taking it somewhere

Mastering Each Component
Getting each part right makes all the difference in your sandwich. For the romesco, don't blend it too smooth - a bit of texture adds character. Let your garlic butter warm up naturally so it spreads nicely and tastes better. When you're fixing the salad mix, go easy on the dressing so it stays crisp and doesn't make your bread soggy.
Prep-Ahead Game Plan
Make your sandwich-making easier by doing some parts early. You can mix up the romesco sauce up to three days before and keep it in the fridge. Do the chicken breading on the day you'll eat it so it stays super crispy. The garlic butter can be made ahead too, ready to add that extra pop of flavor when needed.
Keeping Everything Fresh
To keep all your sandwich parts at their best, store them separately. Put sauces in tight containers in your fridge, but keep bread at room temp so it doesn't get hard. If you need to store already-made sandwiches, wrap them carefully so they don't fall apart or get mushy.
What to Serve Alongside
Round out your meal with sides that go well with these sandwiches. Try a simple green salad, Italian-style potato salad, tasty olives, or some fresh fruit for a complete and balanced meal that'll satisfy everyone.
Choosing the Best Bread
Finding the right focaccia really matters for your sandwich success. Look for bread with lots of little dents on top, showing it's got good air pockets. Pick one that's not too fluffy or too dense - you want it strong enough to hold everything but not so heavy it takes over. Don't go for super oily kinds or your sandwich might end up too greasy.
Our family always adds a tiny bit of smoked paprika to the breadcrumb mix - it brings a depth that works amazingly with the romesco sauce.

After trying different versions of this sandwich many times, I've learned that using good ingredients and layering them in the right order makes all the difference. The way the hot, crunchy chicken meets the cool, dressed greens while the romesco mingles with the garlicky parmesan butter creates the perfect mix of temperatures and textures. Whether you pack it for an outdoor meal or enjoy it at your table, this sandwich shows how thoughtfully combining simple foods can create something truly amazing.
Frequently Asked Questions
- → Can the sauce be prepped early?
- Definitely! It tastes even better after a day or two in the fridge as the flavors blend. Store it for up to a week.
- → What can I use instead of focaccia?
- Ciabatta or a sturdy Italian loaf works just as well. Choose something that holds the fillings nicely.
- → How much prep can I do in advance?
- The sauce and greens can be ready beforehand, but fry the chicken and grill your bread just before eating for peak flavor.
- → Can I swap the lettuce?
- Sure! Butter lettuce or romaine hearts are excellent alternatives if you don’t have Little Gem.
- → What’s the trick to keeping chicken crispy?
- Let it cool briefly on paper towels to soak up extra oil. Don’t wrap the sandwich until you’re ready to enjoy it.