1. Toast your bread slices in 1 tbsp of butter in a skillet over medium heat until crisp. Remove and set aside.
2. Add remaining 1 tbsp of butter to the skillet and cook the sliced peaches over medium-high heat for 4 minutes on each side until browned and caramelized.
3. Layer the sandwich ingredients starting with pesto, followed by heirloom tomatoes, grilled peaches, turkey breast, and Havarti slices.
4. Broil the sandwich with the top bread slice off for 4-5 minutes until the cheese is melted.
5. Add fresh basil leaves on top of the Havarti and place the top slice of bread.
6. Slice in half and serve.
