This is a seared chicken salad built around one smart move: pesto does double duty as both a marinade and the base of the vinaigrette, so the herb flavor runs through the whole dish rather than sitting only on top. You get juicy chicken, creamy mozzarella, crisp cucumber, and peppery arugula all tied together by the same sauce. It comes together in about 32 minutes, and most of that time is hands-off.
Why this recipe works
Two things make this salad reliable. First, pounding the chicken to an even 3/4-inch thickness before marinating means every part of the breast hits the pan at the same time and finishes cooking together โ no dry edges while the center catches up. Second, the pesto vinaigrette uses Dijon mustard as an emulsifier, which keeps the olive oil and red wine vinegar from separating on the plate. A dressing that stays blended actually coats the arugula instead of pooling at the bottom of the bowl, and that changes how the whole salad tastes.
Common problems and fixes
- Arugula wilts before you serve it: Arugula is thin-leafed and collapses fast once dressed. Keep it dry โ spin or pat it thoroughly after washing. Even a little surface water dilutes the dressing and speeds up wilting.
- Mozzarella pearls make the salad watery: Fresh mozzarella is packed in liquid. Drain the pearls and then spread them on a paper towel for a few minutes before adding them. Skipping this step puddles water into your dressing.
- The chicken sticks to the pan: This usually means the pan wasnโt hot enough before the oil went in, or the chicken was moved too soon. Let it sear undisturbed for the full 4โ5 minutes โ it will release cleanly when a proper crust has formed.
- The dressing tastes flat: Pesto varies a lot by brand and batch. Taste the vinaigrette before you dress the salad. If it needs lift, add a small squeeze of lemon juice. If it tastes sharp, a tiny extra drizzle of olive oil smooths it out.
- Pine nuts burn before they toast: A dry skillet over medium heat with no oil means they go from pale to scorched in under a minute if you walk away. Stay at the stove and shake the pan constantly once they start to color.
Keeping leftovers crisp
Dress it at the table โ a pre-dressed salad goes limp fast. Store the arugula, vegetables, and mozzarella separately from the sliced chicken and the dressing, each in sealed containers in the refrigerator. The salad components stay good for up to two days; the chicken keeps for three. When youโre ready to eat, let the chicken sit at room temperature for about ten minutes before slicing โ cold chicken straight from the fridge tastes denser than it should. Dress only the portion you plan to eat right away. Once arugula has been dressed and refrigerated, it wonโt recover its texture.
Pesto Chicken and Tomato Salad
Equipment
- Large skillet (12-inch)
- Small dry skillet
- Mixing bowl (medium)
- Mixing bowl (large)
- Cutting board
- Chef's Knife
- Whisk
- Tongs
- Measuring cups and spoons
- Microplane or fine grater
- Instant-read thermometer
Ingredients
Pesto Marinade & Chicken
- 1.25 lb boneless skinless chicken breasts pounded to 3/4-inch even thickness
- 1 tsp kosher salt
- 0.5 tsp black pepper freshly ground
- 0.25 cup basil pesto for marinade
- 1 tsp lemon zest finely grated
- 1 tbsp lemon juice freshly squeezed
- 1 tbsp olive oil for marinade
To Cook
- 1 tbsp olive oil for searing chicken
Salad & Dressing
- 2 tbsp pine nuts toast until golden
- 3 tbsp extra-virgin olive oil for dressing
- 1.5 tbsp red wine vinegar
- 1 tsp Dijon mustard
- 1 tsp honey
- 1 clove garlic finely grated
- 2 tbsp basil pesto for dressing
- 4 cup baby arugula loosely packed (about 5 oz)
- 3 cup cherry or grape tomatoes halved
- 1 cup English cucumber diced 1/2-inch
- 0.5 cup red onion very thinly sliced
- 8 oz fresh mozzarella pearls drained
- 2 tbsp fresh basil leaves torn
Instructions
- Marinate the chicken: In a medium bowl, whisk together 0.25 cup pesto, lemon zest, lemon juice, 1 tbsp olive oil, salt, and pepper until glossy. Add the pounded chicken and turn to coat. Marinate at room temperature for 10 minutes while you prep the salad vegetables.
- Sear the chicken: Heat a large skillet over medium-high until hot, then add 1 tbsp olive oil. Let excess marinade drip off the chicken and lay it in the pan. Sear until deep golden, 4โ5 minutes per side, or until the thickest part reaches 165ยฐF / 74ยฐC. Transfer to a board and rest 5 minutes to retain juices.
- Toast the pine nuts: While the chicken rests, place a small dry skillet over medium. Add the pine nuts and toast, stirring, until golden and fragrant, 2โ3 minutes. Immediately transfer to a plate to cool to prevent overbrowning.
- Make the pesto vinaigrette: In a large mixing bowl, whisk 3 tbsp extra-virgin olive oil, 1.5 tbsp red wine vinegar, Dijon, and honey until slightly thickened. Whisk in the grated garlic and 2 tbsp pesto until emulsified and silky. Taste and adjust seasoning as needed.
- Prep the salad components: Halve the tomatoes, dice the cucumber, and thinly slice the red onion. Pat the mozzarella dry if needed to avoid watering down the dressing.
- Assemble and serve: Add the arugula to the bowl with the vinaigrette and toss to coat. Fold in the tomatoes, cucumber, red onion, and mozzarella until just combined. Slice the rested chicken on a bias and arrange over the salad. Shower with the toasted pine nuts and torn basil. Serve immediately while the chicken is warm and the greens are crisp.
Notes
Chefโs Tips
- Pound the chicken to an even 3/4-inch so it cooks uniformly and stays juicy.
- Let the skillet preheat thoroughly; searing on medium-high creates a flavorful crust without drying out the meat.
- Resting the chicken for 5 minutes is non-negotiableโjuices redistribute, keeping slices moist.
- Salt the tomatoes lightly 5 minutes before tossing if theyโre very firm; it heightens sweetness and juiciness.
- For a lighter dressing, whisk in 1โ2 teaspoons of water until the pesto vinaigrette turns glossy and slightly looser.
- Meal prep: marinate and cook the chicken ahead; slice and bring to room temp, then toss with greens and dressing just before serving.
Nutrition
FAQ
Can I use store-bought pesto, or do I need to make it from scratch?
Store-bought pesto works fine here. Just taste it first โ some jarred pestos are saltier or more oily than others, so you may need to reduce the added salt in the marinade or adjust the olive oil in the dressing slightly.
What if I donโt have a meat mallet to pound the chicken?
A heavy skillet or a rolling pin works just as well. Place the chicken breast between two sheets of plastic wrap or in a zip-lock bag before pounding to keep things clean and prevent tearing.
Can I make any part of this ahead of time?
Yes โ the dressing and the marinated chicken can both be prepared up to 24 hours in advance and kept covered in the refrigerator. Chop the vegetables and store them separately, then sear the chicken and assemble right before serving.
How do I know when the chicken is actually done without a thermometer?
An instant-read thermometer is the most reliable method and worth having โ the target is 165ยฐF at the thickest part. If you donโt have one, cut into the thickest section: the juices should run clear and the meat should show no pink, but a thermometer removes the guesswork entirely.