Rach On The Radio - Kentucky Hot Brown Sandwich

Roasted Turkey and Sauce
1 boneless turkey breast, about 3 pounds
6 tablespoons (3/4 stick) unsalted butter, softened
Kosher salt and freshly ground black pepper
2 cups whole milk, plus more if needed
2 tablespoons all-purpose flour
1/2 pound sharp white cheddar cheese, grated (2 cups)
1/4 cup freshly grated parmesan cheese
Pinch of freshly grated nutmeg
Sandwiches
4 large eggs
1 1/2 cups whole milk or more if needed
Kosher salt and freshly ground black pepper
8 (1/2-inch thick) slices day-old Pullman or other good-quality white sandwich bread
4 tablespoons (1/2 stick) unsalted butter
6 tablespoons canola oil
3 ripe beefsteak tomatoes, sliced 1/2-inch thick
6 ounces sharp cheddar cheese, grated (1 1/2 cups)
1/2 cup freshly grated Parmesan cheese
16 (1/4-inch thick) slices bacon, cooked until crisp
Fresh flat-leaf parsley

Rach on the Radio - Kentucky Hot Brown Sandwich