Pesto Quesadilla is a quick, crispy lunch you can make in minutes with tender chicken, melty cheese, and fresh spinach tucked inside a golden tortilla. It is simple, satisfying, and perfect for busy weekdays, light dinners, or fast leftover meals.
This is the kind of meal that works when you want something warm and flavorful without pulling out a long list of ingredients. The pesto brings bold, herby richness, while the chicken and cheese make it feel filling enough to stand on its own.
Fresh spinach gives the filling a little color and balance, but it also softens beautifully once it hits the heat. That means every bite has a mix of creamy, savory, and crisp textures that feels a little more special than an ordinary quesadilla.
It is also a smart way to use cooked chicken you already have in the fridge. Whether you are planning a quick lunch, an after-school meal, or a low-effort dinner, this chicken pesto quesadilla keeps things easy while still tasting like something you actually looked forward to eating.
Pesto Quesadilla Ingredients
Tortillas form the crisp outer layer, so choose medium to large tortillas that fold easily and toast well in the skillet without tearing.

Cooked shredded chicken makes the filling hearty and convenient. This is a great place to use leftover roast or poached chicken because it warms through fast and soaks up the pesto flavor nicely.
Basil pesto is the ingredient that gives this dish its personality. It adds a concentrated mix of herbs, garlic, oil, and savory depth, so even a small amount brings a lot of flavor.
Shredded cheese helps hold everything together and creates that classic melted center. A mild, smooth-melting cheese works especially well because it lets the pesto shine without overpowering it.
Fresh spinach adds freshness and a tender layer between the chicken and cheese. It wilts quickly as the quesadilla cooks, so you get a softer bite without needing to pre-cook it.

Cooking Steps
STEP 1: Warm a sturdy skillet over medium heat and lightly oil the surface. You want the pan hot enough to toast the tortilla slowly and evenly, not so hot that it browns before the filling has time to heat through.
STEP 2: Place one tortilla in the skillet and spread a thin layer of pesto over one side. Add a portion of shredded chicken, a small handful of spinach, and enough cheese to cover the filling in a balanced layer without overstuffing.
STEP 3: Fold the tortilla over to create a half-moon shape, then press gently with a spatula. Let it cook until the underside turns golden and crisp, which usually takes a couple of minutes if the heat is set right.
STEP 4: Flip carefully and cook the second side until the cheese is fully melted and the filling is hot. The outside should feel lightly crisp and toasted, while the inside stays soft and cheesy.
STEP 5: Move the finished quesadilla to a cutting board and let it sit for a brief minute before slicing. That short rest helps the melted cheese settle slightly, making each piece easier to serve and less likely to spill apart.
STEP 6: Repeat with the remaining tortillas and filling, adjusting the heat if needed between batches. Serve them warm while the edges are still crisp and the center is at its most melty.
Helpful Tips
- Use moderate heat instead of rushing with high heat, because a slower toast gives the cheese time to melt before the tortilla gets too dark.
- Do not overload the filling, or the quesadilla will be harder to flip and the ingredients may slide out into the pan.
- Slice after a brief rest so the filling stays tucked inside and the pesto does not run out as soon as you cut it.
Can I use leftover chicken for this?
Yes, and this is one of the best reasons to make it. Leftover cooked chicken works beautifully because it only needs to warm through, which keeps the recipe fast and makes it ideal for busy days.
What cheese works best in a pesto quesadilla?
A mild melting cheese is usually the safest choice. Monterey Jack, mozzarella, or a gentle cheddar all give you a smooth, gooey texture without competing too much with the bold basil flavor in the pesto.
Perfect Pairings
This quesadilla is satisfying on its own, but a simple side can turn it into a fuller meal. A crisp green salad with a light vinaigrette works well because it keeps the plate fresh and balanced.
Tomato soup is another great option, especially if you want something cozy and comforting. The warm soup pairs nicely with the crisp tortilla and cheesy filling.
For something cool and quick, serve it with a dipping sauce like ranch, garlic yogurt sauce, or a small spoonful of sour cream. That little extra on the side can make the flavors feel even more complete.
Can I make these ahead of time?
You can prep the ingredients ahead, but the quesadillas themselves are best cooked close to serving time. If needed, you can assemble them in advance and keep them chilled briefly, then toast them when you are ready to eat.

How to Store & Reheat
Leftover quesadillas can be stored in the refrigerator for up to 3 days. Let them cool first, then place them in an airtight container or wrap them well so the tortillas do not dry out.
For longer storage, freeze them in a single layer until firm, then transfer them to a freezer-safe bag or container. They keep well for about 1 month. Separating layers with parchment helps prevent sticking.
To reheat, a skillet is the best option if you want the outside to turn crisp again. Warm each piece over medium-low heat until the center is hot and the cheese loosens up. You can also use the oven or air fryer for a few minutes.
The microwave works for speed, but it softens the tortilla, so it is not the best method when you want that just-cooked texture. A quick skillet reheating brings back much more of the original crispness.
Can I make this without spinach?
Absolutely. The spinach is easy to swap or leave out entirely. You can replace it with a small amount of arugula, chopped kale, or even thinly sliced tomatoes, as long as you keep the filling fairly light so the tortilla still crisps well.

Pesto Quesadilla
Ingredients
- 4 medium-large tortillas
- 1 cup cooked chicken shredded, such as rotisserie chicken
- 4 tablespoons basil pesto such as Barilla Rustic Basil Pesto
- 4 ounces shredded cheese such as Monterey Jack or mild cheddar
- 1 cup fresh spinach leaves
Instructions
- Step 1. Set a heavy-bottomed skillet over medium heat and allow it to warm. Lightly coat the pan with oil to help prevent sticking, then place one tortilla flat in the skillet.
- Step 2. Spread 1 tablespoon of pesto evenly across the surface of the tortilla. Add one-quarter of the shredded chicken, a portion of the spinach, and a generous amount of cheese, arranging the filling so it is evenly distributed.
- Step 3. Fold the tortilla in half over the filling. Gently press the top with a spatula to help it hold its shape, then cook for about 2 minutes, or until the underside is lightly crisped and golden.
- Step 4. Carefully turn the quesadilla over and cook for 1 to 2 minutes more, until the second side is toasted and the cheese has melted completely. The filling should be thoroughly heated and the tortilla nicely crisp.
- Step 5. Transfer the cooked quesadilla to a cutting board and let it rest briefly. Slice it in half for easier serving, then repeat the same process with the remaining tortillas and filling ingredients until all quesadillas are prepared.