Begin by preheating your oven to 375°F (190°C) to prepare for baking.
In a large mixing bowl, combine the shredded chicken, basil pesto, mozzarella cheese, sun-dried tomatoes, chopped red onion, olive oil, and a generous pinch of salt and freshly ground black pepper. Use a spatula or wooden spoon to thoroughly mix all the ingredients until the chicken is well coated with the pesto sauce and everything is evenly distributed.
Take the loaf of crusty Italian bread and, using a sharp knife, slice it lengthwise down the center to create a top half and a bottom half. Carefully hollow out some of the soft inner bread from both halves, leaving enough crust to hold your filling without breaking.
Generously spoon the chicken and pesto mixture into the hollowed-out bread halves. Pack the filling firmly into the bread, ensuring every nook and cranny is filled with the delicious combination.
Place both halves of the stuffed bread onto a baking sheet. To prevent the crust from burning while baking, wrap the bread in aluminum foil.
Bake in your preheated oven for 25-30 minutes. The bread should become golden and crispy while the filling heats through and becomes hot and bubbly.
After baking, carefully remove the bread from the oven and unwrap the foil. Allow the stuffed bread to cool for a few minutes before slicing.
Cut the stuffed bread into individual servings, arrange on a serving platter, and garnish with fresh basil leaves for a pop of color and flavor. Serve warm and enjoy the delightful combination of textures and tastes!
Notes
Serve on a rustic wooden board or colorful platter, drizzled with additional pesto.