Step 1

For the porchetta: The day before roasting, chop 1 teaspoon of the fennel seed and mix it with the orange zest and 2 1/4 teaspoons of the salt. Rub the turkey breast with the salt mixture, then transfer it to a gallon-size freezer bag and refrigerate over night.

Step 2

The day of roasting: Preheat the oven to 400 degrees F. Remove the turkey breast from the refrigerator and allow it to come to room temperature for 20 minutes.

Step 3

Meanwhile, toast the panko in a 12-inch ovenproof skillet over medium heat, stirring with a rubber spatula until golden brown. Remove to a medium bowl and add the remaining 1 teaspoon fennel seed, the red pepper flakes and 1/2 teaspoon of the salt. Set aside.

Step 4

To the same pan, over medium-high heat, add 2 tablespoons of the olive oil, then the apples, shallots, fennel, rosemary and the remaining 1/2 teaspoon salt. Cook until the fennel softens, about 5 minutes; add to the bowl with the panko and toss to combine.

Step 5

Unfold the butterflied turkey breast and spread the stuffing evenly over the surface of the breast. Tightly roll up the breast and tie it with butcher's twine at 2-inch intervals, then tie it once lengthwise.

Step 6

Place the skillet over medium-high heat and add the remaining 2 tablespoons olive oil. Sear the turkey on all sides until golden brown, about 3 minutes per side. Transfer to the oven and roast until an instant read thermometer reads 155 degrees F at the thickest point, about 40 minutes. Remove the turkey to a cutting board, tent with foil and rest for 15 minute before slicing.

Step 7

For the gravy: While the porchetta is resting, prepare the gravy. Over medium-high heat, add the rosemary sprigs and flour to the skillet the turkey was cooked in; whisk to form a smooth paste. (If there aren't enough pan drippings to make a paste, add a tablespoon of olive oil.) Cook the paste to a medium amber color over medium-high heat, 3 to 4 minutes. Add the white wine and cook, whisking, for 1 minute more. Add the chicken broth, salt and pepper and whisk until smooth. Bring the gravy to a boil, lower the heat to medium and simmer for 5 minutes. Strain the gravy just before serving. Serve alongside the porchetta.