
This grilled chicken Caprese sandwich is your go to when summer hits and turning on the oven feels impossible. It’s fresh juicy and layered with everything you crave in one bite including basil tomatoes mozzarella and grilled chicken.
I made this for a weekend BBQ and even the picky eaters asked for seconds. It became our summer classic after that.
Ingredients
- Boneless skinless chicken breasts: sliced thin for even grilling
- Olive oil: helps the marinade cling and keeps the chicken juicy
- Italian seasoning: adds herby depth without extra effort
- Salt: brings out natural flavor in the chicken
- Ground pepper: adds balance and sharpness
- Ciabatta rolls: sturdy enough to hold layers without getting soggy
- Pesto: adds richness and a fresh herby kick
- Fresh mozzarella: creamy and soft for the perfect melt
- Beefsteak tomatoes: thick slices add juiciness and mild acidity
- Fresh basil leaves: brightens every bite and ties it all together
- Balsamic glaze: for a sweet finishing touch optional but wonderful
Step-by-Step Instructions
- Prepare the Chicken:
- Slice each chicken breast in half lengthwise to create thinner cutlets. Place between parchment and gently pound with a mallet until even and thin. This helps cook them quickly and evenly.
- Make the Marinade:
- In a shallow dish combine olive oil Italian seasoning salt and pepper. Add chicken and turn to coat thoroughly. Cover and refrigerate for at least thirty minutes or overnight for deeper flavor.
- Grill the Chicken:
- Preheat your grill to medium high. Brush the grates with oil. Grill chicken for three minutes on one side then flip and grill for three more. Look for golden grill marks and an internal temp of one sixty five Fahrenheit. Let rest for five minutes before serving.
- Toast the Bread:
- Place ciabatta rolls cut side down on the grill while chicken rests. Toast for one to two minutes until lightly golden and crisp. This keeps the bread from getting soggy.
- Assemble the Sandwiches:
- Spread pesto on the bottom half of each roll. Add mozzarella then tomato slices. Layer a piece of grilled chicken and top with basil leaves. Drizzle with balsamic glaze if using then close with the top bun.
- Serve Fresh:
- Serve immediately while the bread is toasty and the chicken is warm. Leftovers can be stored separately and assembled just before eating.

One summer evening I swapped store bought pesto for a homemade mint version and it completely transformed the sandwich. Now I grow basil and mint just for this.
Storage Tips
Store leftover grilled chicken in a sealed container in the fridge for up to three days. Keep sliced mozzarella and tomatoes separate to maintain texture. Reheat the chicken in the oven before assembling.
Ingredient Substitutions
Use sourdough focaccia or baguette if you do not have ciabatta. Swap basil pesto for arugula or kale pesto. Heirloom tomatoes bring more sweetness if available.
Serving Suggestions
Serve alongside a crisp green salad or roasted vegetables. It also pairs beautifully with chilled white wine or sparkling water with lemon.

Cultural and Historical Context
The sandwich draws from Italian Caprese salad which features tomato basil and mozzarella. Adding grilled chicken makes it heartier while still honoring the traditional flavor trio.
Frequently Asked Questions About Recipes
- → How do I keep grilled chicken from drying out?
Marinate the chicken for at least 30 minutes and pound it to an even thickness. Let it rest after grilling to retain juices.
- → What’s the best bread to use?
Ciabatta rolls are ideal for this sandwich, but focaccia, sourdough, or baguette also work well. Toast lightly for texture.
- → Can I make this without a grill?
Yes! Use a grill pan on the stove over medium-high heat and cook the chicken for about 3 minutes per side.
- → What kind of pesto works best?
Classic basil pesto is great, but you can try mint or kale pesto for a twist. Choose fresh, flavorful pesto for best results.
- → Can I make it ahead of time?
You can grill the chicken in advance and store it for up to 3 days. Assemble the sandwich fresh before serving.
- → What side dishes pair well with this?
A light side salad or crisp vegetable slaw complements the sandwich without overpowering the fresh ingredients.