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Sourdough Pesto Grilled Cheese

The Best Pesto Grilled Cheese elevates a classic comfort food into a gourmet experience, where the bright, herby punch of pesto meets the creamy melt of fresh mozzarella. After extensive testing, I’ve found that the key to perfection lies in balancing rich, savory fillings with perfectly toasted, buttery bread.

Ingredients

Scale
  • 8 thick slices of sourdough bread
  • 3 balls fresh mozzarella (each 125g), sliced thin and dried
  • 8 sun-dried tomatoes, dried and chopped
  • 4 strips bacon, cooked and chopped
  • 4 generous tablespoons pesto
  • Butter, as required

Instructions

  1. Prepare the Fillings: Begin by ensuring your mozzarella is properly dried; pat the thin slices thoroughly with a paper towel to remove excess moisture. (Pro tip: This critical step prevents a soggy sandwich and ensures a clean, stretchy melt). Simultaneously, chop the cooked bacon and sun-dried tomatoes into small, bite-sized pieces for even distribution.
  2. Assemble the Sandwiches: Lay out four slices of sourdough bread. Spread one generous tablespoon of pesto evenly on each slice. Unlike a thin smear, a hearty layer is essential for infusing every bite with flavor. Top the pesto with the dried mozzarella slices, followed by the chopped sun-dried tomatoes and bacon.
  3. Top and Butter the Bread: Place the remaining slices of sourdough on top to form four sandwiches. Generously butter the outer face of the top slice of each sandwich. This method, buttering the bread directly rather than the pan, allows for more controlled, even coverage.
  4. Preheat and Cook the First Side: Step 4 — Preheat and Cook the First Side Preheat a large skillet or griddle over medium-low heat. Place the sandwiches in the pan, buttered-side down. Cook for 3-4 minutes until the bread is a deep, golden brown. Research shows that a lower, slower heat is key for melting the cheese completely without burning the crust.
  5. Butter and Flip: Carefully butter the now-exposed top slice of each sandwich. Using a wide spatula, firmly flip each one. Press down gently to ensure even contact with the pan, which helps fuse the ingredients together.
  6. Cook to Golden Perfection: Continue cooking the second side for another 3-4 minutes. The sandwich is done when both sides are uniformly crisp and golden brown, and you can see the cheese oozing slightly from the edges. Let rest for one minute before slicing to allow the interior to set slightly for cleaner cuts.
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