This Grilled Mozzarella Sandwich with Walnut Pesto takes the humble grilled cheese to a whole new level. The combination of buttery, crispy sourdough bread, rich and creamy mozzarella, and a bold walnut pesto creates an irresistible balance of textures and flavors. The addition of fresh arugula adds a peppery bite that perfectly complements the nutty, herby pesto spread.
Perfect for a quick lunch, a comforting dinner, or even a fancy snack, this sandwich is simple yet elegant. Serve it alongside a bowl of tomato soup or a crisp side salad for a well-rounded meal. Whether you’re a fan of classic grilled cheese or looking for an upgrade, this recipe will definitely become a new favorite!
Full Recipe:
Ingredients:
- 4 slices sourdough bread
- 2 tablespoons butter, softened
- ½ cup walnut pesto (see note below)
- 4 ounces fresh mozzarella, sliced
- ¼ cup arugula
- 2 tablespoons grated Parmesan cheese
Directions:
- Heat a skillet or griddle over medium heat.
- Spread butter evenly on one side of each slice of bread.
- Spread walnut pesto on the unbuttered side of two slices.
- Layer mozzarella slices, arugula, and Parmesan cheese over the pesto.
- Top with the remaining bread slices, buttered side facing up.
- Place the sandwiches on the skillet and cook for 3-4 minutes per side, pressing gently with a spatula, until golden brown and crispy.
- Remove from heat, slice, and serve warm.
Prep Time: 10 minutes | Cooking Time: 8 minutes | Total Time: 18 minutes
Kcal: 420 kcal | Servings: 2 servings
A Gourmet Twist on the Classic Grilled Cheese
Grilled cheese sandwiches have long been a staple of comfort food, but this Grilled Mozzarella Sandwich with Walnut Pesto takes it up a notch with rich, creamy mozzarella, nutty walnut pesto, and crispy golden sourdough bread. The result is a gourmet sandwich bursting with flavor, texture, and wholesome ingredients.
Why You’ll Love This Recipe
✔ Quick & Easy: Ready in under 20 minutes, making it perfect for busy lunches or a light dinner.
✔ Gourmet Flavors: Walnut pesto adds a unique and elevated taste to the classic grilled cheese.
✔ Perfectly Crispy: The combination of butter and sourdough ensures a golden, crispy crust with every bite.
✔ Versatile & Customizable: Swap out ingredients based on your preferences, such as using whole wheat bread, adding tomatoes, or experimenting with different cheeses.
Ingredients & Substitutions
Main Ingredients:
- Sourdough Bread – This bread toasts beautifully and adds a rustic crunch. You can substitute it with whole wheat, ciabatta, or even brioche for a softer texture.
- Mozzarella Cheese – Fresh mozzarella provides a creamy melt and mild flavor. If you prefer a sharper taste, try fontina, provolone, or aged cheddar.
- Walnut Pesto – Made with walnuts, basil, Parmesan, olive oil, and garlic, this pesto is a rich, nutty, and herby spread. You can substitute it with traditional basil pesto, sun-dried tomato pesto, or even an almond-based pesto for a different twist.
- Arugula – Adds a peppery bite that balances the richness of the cheese and pesto. Spinach or fresh basil can be used as an alternative.
- Butter – Helps achieve that crispy, golden-brown exterior. You can also use olive oil for a slightly lighter version.
Optional Add-ins for Extra Flavor:
- Tomato Slices: Adds a fresh, juicy contrast.
- Avocado: Brings creaminess and added nutrients.
- Prosciutto or Turkey Slices: For a protein boost.
- Caramelized Onions: Adds a sweet and savory element.
Step-by-Step Cooking Tips
How to Make the Best Grilled Mozzarella Sandwich with Walnut Pesto
1️⃣ Use Room Temperature Butter – Softened butter spreads evenly on the bread, ensuring a uniform golden crust.
2️⃣ Low and Slow Cooking – Cook the sandwich on medium-low heat for even toasting and maximum cheese melt.
3️⃣ Press the Sandwich Gently – Lightly pressing the sandwich with a spatula helps achieve a crispy crust and gooey interior.
4️⃣ Let it Rest Before Slicing – Allowing the sandwich to rest for a minute ensures the cheese sets slightly, preventing it from oozing out completely.
Pairing Suggestions
This grilled cheese sandwich with walnut pesto pairs beautifully with:
🥣 Classic Tomato Soup – The rich and slightly acidic tomato soup balances the creamy cheese and pesto flavors.
🥗 Crisp Green Salad – A fresh arugula or mixed greens salad with balsamic vinaigrette complements the sandwich.
🍷 Wine Pairing – A glass of Sauvignon Blanc or Pinot Grigio pairs wonderfully with the rich mozzarella and nutty pesto.
Storage & Make-Ahead Tips
- Make-Ahead: You can prepare the walnut pesto in advance and store it in an airtight container in the fridge for up to one week.
- Reheating: Reheat leftovers in a skillet on low heat to maintain crispiness. Avoid using the microwave as it may make the bread soggy.
- Freezing: This sandwich is best enjoyed fresh, but if necessary, you can freeze an ungrilled assembled sandwich. Wrap it in foil and store it in a freezer-safe bag. Cook from frozen on low heat for the best texture.
Health Benefits of This Recipe
✅ Protein-Packed: Mozzarella and walnuts provide a good dose of protein to keep you full.
✅ Heart-Healthy Fats: Walnuts and olive oil contribute to heart-healthy unsaturated fats.
✅ Nutrient-Dense: Basil and arugula add vitamins and antioxidants to boost immunity.
Frequently Asked Questions
1. Can I use store-bought pesto instead of homemade walnut pesto?
Yes! Traditional basil pesto works well, but homemade walnut pesto offers a unique depth of flavor.
2. What’s the best way to keep my sandwich crispy?
Make sure the skillet is at the right heat level—medium-low is best. Avoid flipping too soon, and use butter or olive oil for that perfect golden-brown crust.
3. Can I make this sandwich vegan?
Absolutely! Substitute dairy-free mozzarella, use vegan pesto, and replace butter with a plant-based alternative.
This Grilled Mozzarella Sandwich with Walnut Pesto is the perfect balance of crispy, cheesy, nutty, and fresh flavors. Whether you’re making a quick lunch or an easy weeknight meal, this gourmet take on a grilled cheese will leave you wanting more!
Key Ingredients & Their Benefits
Here’s why each ingredient plays a crucial role in the dish:
- Sourdough Bread – Offers a tangy, robust flavor and a crispy crust when grilled. It’s also easier to digest due to its fermentation process.
- Mozzarella Cheese – Known for its creamy texture and excellent melting properties, making it perfect for grilled cheese.
- Walnut Pesto – Walnuts are rich in Omega-3 fatty acids and add a nutty depth to the sandwich.
- Arugula – Provides a fresh, peppery bite that balances the richness of the cheese and pesto.
- Butter – Ensures a golden, crispy crust while adding richness to the sandwich.
Optional Ingredient Swaps:
- Swap sourdough for ciabatta, focaccia, or whole wheat bread for a different texture.
- Replace mozzarella with provolone, fontina, or brie for a unique twist.
- Try spinach or fresh basil instead of arugula.
- Use almond pesto or sun-dried tomato pesto for a different flavor profile.
Step-by-Step Cooking Technique for the Best Grilled Cheese
How to Achieve the Perfect Crispy & Gooey Grilled Cheese
- Choose the Right Bread: A sturdy bread like sourdough is best to hold up to the melty cheese and pesto.
- Butter for the Win: Spread a thin layer of butter evenly on each slice for a golden crust.
- Cook Low & Slow: Heat the pan to medium-low to allow the cheese to melt fully without burning the bread.
- Press Lightly: Using a spatula to press the sandwich down slightly helps create even crispiness.
- Rest Before Cutting: Letting the sandwich sit for 1-2 minutes before slicing prevents the cheese from oozing out.
How to Make it in an Air Fryer
- Preheat the air fryer to 375°F (190°C).
- Assemble the sandwich and place it in the air fryer basket.
- Air fry for 4-5 minutes per side, flipping once, until golden brown and crispy.
Pairing Suggestions
To elevate your meal, serve this sandwich with:
🥣 Tomato Basil Soup – The acidity of tomato soup balances the richness of the grilled cheese.
🥗 Fresh Green Salad – A simple arugula or mixed greens salad with a lemon vinaigrette makes a great side.
🥤 Iced Tea or Lemonade – A refreshing drink to balance the flavors.
🍷 Wine Pairing:
- White Wine: Sauvignon Blanc or Pinot Grigio complement the nutty pesto and creamy mozzarella.
- Red Wine: A light-bodied Chianti or Pinot Noir enhances the sandwich’s richness.
Make-Ahead & Storage Tips
- Walnut Pesto: Can be made ahead and stored in the fridge for up to one week or frozen for up to three months.
- Pre-Assembled Sandwiches: Can be kept in the fridge for a few hours before grilling.
- Reheating: For best results, reheat in a skillet over low heat or use an air fryer at 350°F (175°C) for 3-5 minutes.
Nutritional Information
Each sandwich (based on the recipe) provides:
- Calories: ~420 kcal
- Protein: ~18g
- Carbs: ~40g
- Fat: ~22g
- Fiber: ~3g
The sandwich offers a good balance of protein, healthy fats, and fiber while being a satisfying, energy-boosting meal.
Creative Variations
Want to mix things up? Try these variations:
🔥 Spicy Pesto Grilled Cheese: Add a drizzle of hot honey or crushed red pepper flakes for a kick.
🥑 California Style: Add avocado slices for extra creaminess.
🧄 Garlic Butter Crust: Mix minced garlic into the butter before spreading it on the bread.
🍅 Caprese-Inspired: Add tomato slices and fresh basil for a Mediterranean touch.
Conclusion
This Grilled Mozzarella Sandwich with Walnut Pesto is the ultimate fusion of comfort and gourmet flavors. Whether you’re making it for a quick weekday lunch or a relaxed weekend meal, this sandwich is sure to become a household favorite. With its perfectly crispy exterior, melty cheese, and nutty, herbaceous pesto, every bite is an explosion of flavor.