
Pesto mozzarella grilled cheese turns a simple sandwich into an irresistible meal with the herby kick of pesto and creamy melt of mozzarella. This Italian-inspired twist comes together in minutes for a gooey treat that feels special but could not be easier to make.
My first time layering pesto into grilled cheese was a happy accident during a rushed lunch. Now I crave that punch of basil and the ultra-stretchy mozzarella every time sandwich season rolls around.
Ingredients
- Sourdough bread: fresh sturdy slices yield the best crunch and hold up well to melty cheese
- Fresh mozzarella ball: choose one with minimal moisture so the sandwich is not soggy slice it thick for extra melt
- Pesto: classic basil or try arugula for peppery brightness use one with vibrant green color and a strong fresh aroma
- Butter: soft and spreadable is ideal for golden crisp edges opt for European-style for rich taste
- Chopped sun-dried tomatoes: optional but add a jammy tang try to find oil-packed and drain well
Instructions
- Spread the Pesto:
- Gently stir the pesto if it has separated and use half to spread evenly over two slices of bread covering right to the edges. This will keep every bite flavorful and prevent any dry spots.
- Layer Cheese and Tomatoes:
- Pat mozzarella slices dry to avoid extra moisture. Arrange in a single layer over pesto taking care to overlap a bit for full coverage. Sprinkle with sun-dried tomatoes if using making sure they are evenly distributed for bursts of flavor.
- Top and Butter the Bread:
- Place the remaining bread on top of each sandwich pesto-side in. Spread a thin even layer of butter on the outside of each sandwich pressing gently so the bread sticks to the filling but does not compress completely.
- Grill to Perfection:
- Preheat your skillet over medium-low to let the bread toast slowly. Place sandwiches in the skillet pressing lightly with a spatula. Cook for about three minutes until golden then flip and grill the other side for three more minutes until the mozzarella is fully melted and the exterior is crispy and deeply golden.
- Slice and Serve:
- Let your grilled cheese rest on a cutting board for one minute. Slice in half while the cheese is stretchy and serve right away.

I am obsessed with good pesto and always keep a jar of homemade on hand. The first time I made this sandwich my daughter demanded another one for dinner later that night so now it is in constant family rotation.
Storage Tips
If you have leftovers let the sandwich cool completely before wrapping in foil and storing in the fridge. Reheat in a skillet over low heat to recapture the crisp crust and gooey middle. Avoid microwaving as it makes the bread tough.
Ingredient Substitutions
No fresh mozzarella Use shredded low-moisture mozzarella for a firmer sandwich. Dairy-free vegan butter and plant-based mozzarella are delicious alternatives. If nut allergies are a concern try sunflower seed pesto.
Serving Suggestions
Pair with a bowl of tomato soup or a crisp arugula salad for a classic lunch combo. Top with extra pesto or a drizzle of balsamic glaze for added punch. Cut into strips for kid-friendly dippers.
Cultural and Historical Context
Grilled cheese has been an American diner staple for generations but this version borrows the flavors of Italian panini. Combining basil pesto and mozzarella is reminiscent of beloved caprese flavors and it always draws friends to the kitchen when I make it.
Seasonal Adaptations
Use sun-dried tomato pesto in winter for a deeper flavor. Add thin slices of ripe summer tomatoes when in season. Replace sourdough with whole grain bread in fall for a hearty twist.
Success Stories
This sandwich won over my skeptical father who claimed he was a plain cheddar guy for life. After making it for a neighborhood picnic several folks asked for the recipe and it became my go-to anytime I want an easy meal that feels gourmet.
Freezer Meal Conversion
Prep sandwiches through buttering and wrap tightly in parchment and foil. Freeze uncooked. When ready to eat grill straight from the freezer over low heat allowing an extra five minutes per side to heat through and melt the cheese completely.

This gooey grilled cheese is packed with flavor and comes together in just minutes. Enjoy every herby bite of this irresistible twist on a classic sandwich.
Common Recipe Questions
- → What type of bread works best?
Sourdough is ideal for its structure and flavor, but any hearty bread slices will work well.
- → Can I substitute the mozzarella?
Yes, try provolone or fontina for a similar melt and mild, creamy flavor.
- → Is pesto with nuts required?
Traditional pesto includes nuts, but nut-free pesto can be used if preferred or for allergies.
- → How do I prevent soggy bread?
Butter the outside surfaces and grill over medium heat for a crisp texture without sogginess.
- → What additions can enhance flavor?
Sun-dried tomatoes add tang; a sprinkle of chili flakes or fresh basil can boost freshness.