Ingredients

2 (7 1/2-by-3-inch) pieces focaccia, halved horizontally 

11 tablespoons unsalted butter, room temperature 

4 to 8 oil-packed anchovy fillets, finely chopped 

Zest and juice of 1/2 lemon 

1/2 cup fresh flat-leaf parsley, sliced 

1/2 cup fresh thinly sliced chives 

Coarse salt and freshly ground black pepper 

6 to 8 ounces fresh mozzarella, sliced 

Radishes, quartered, for garnish 

Preparation

In a small bowl, mix together butter, anchovies, lemon juice, zest, parsley, and chives until well combined; season with salt and pepper.

Preheat a panini press. Spread butter mixture evenly over the four cut sides of focaccia; top with cheese. Sandwich bread slices together and transfer to panini press. Press until cheese is melted, 4 to 5 minutes.

Remove sandwiches from press and cut each into quarters. Serve immediately with radishes.