Roast Turkey Breast with shallots

1 tablespoon butter 1 onion , diced 3 scallions , chopped (or shallots) 3 garlic cloves 3 stalks celery , diced 3/4 cup dry sherry 1 cup French bread, diced 1[...]

8 ounces mascarpone cheese 2 ounces prosciutto ham , finely chopped 2 teaspoons dried Italian seasoning 1 turkey breast , approx. 6 lbs 1 lemon , halved 2[...]

1 boneless turkey breast half (2 1/2 to 3 pounds) 2 tablespoons olive oil 5 garlic cloves , unpeeled 1/2 teaspoon kosher salt 1/4 teaspoon black pepper 1[...]