01 -
Spread softened butter on one side of each bread slice. Lay two slices down with the buttered side facing out. Spread basil pesto on the unbuttered side of each base slice. Layer half the cheese, then bacon slices, followed by chopped sun-dried tomatoes, then the remaining cheese. Cap each sandwich with a bread slice, buttered side outward.
02 -
Preheat a skillet over medium heat. Place the sandwiches in the pan and cook for 3 to 4 minutes per side, pressing gently with a spatula, until the bread is golden brown and the cheese has melted completely.
03 -
Remove sandwiches from the skillet, slice in half, and serve immediately while hot.