Allow the turkey breast stand at room temp for about 1 hour before cooking.
Preheat oven to 375°F
Put the 4 cups of cubed root vegetables in a medium size pot, cover with water by a few inches and bring to a boil. Cook the vegetable for 10 minutes, the vegetables will be only partially cooked, drain, set aside.
1 cup sweet potato, 1 cup squash, 1 cup turnip, ½ cup parsnip, ½ cup carrot
In a small bowl, make a paste with the olive oil, paprika, garlic powder, salt and pepper, set aside.
2 tbsp olive oil, 1 tsp salt, 1 tbsp paprika, 1 tbsp garlic powder, 1/8 tsp pepper
Place the turkey breast inside a large roasting pan – you will dress the turkey right in the roasting pan so that all the excess spices and herbs fall into the dish rather than a work surface.
3 lb turkey
Squeeze and rub lemon half all over turkey (keep the squeezed lemon half). Discard any seeds. Leave the lemon half in the roasting pan.
½ lemon
Rub the olive oil and spice mixture all over the turkey separating the skin from the meat in order to get the spice mixture under the skin.
Stuff the thyme and rosemary under the turkey and some under the skin as well. Place the previously squeezed half lemon under the turkey. The turkey should be in the pan, flattened out with the skin side up.
4 sprigs thyme, 4 sprigs rosemary
Add the chopped shallots, celery, garlic cloves and cherry tomatoes to the bottom of the pan.
3 shallot, 4 stalks celery, 1 head garlic, 1 cup cherry tomato
Scatter the partially cooked root veggies around the turkey breast and in and around the tomatoes and garlic.
Add the stock to the bottom of the roasting pan.
1 cup chicken broth
Cook for 1¼ -1½ hrs or until the meat thermometer reads 160°F in the breast (the skin should be golden brown). Baste the turkey every 20 minutes with drippings; add a little water if needed.
Once cooked, remove from the oven, remove turkey from the pan onto a cutting board and let rest, tented with foil for about 10 minutes. Separate the vegetables from the pan drippings or jus, and reserve.
Slice the turkey breast crosswise on an angle in ¼-½ inch slices.
Serve on a platter with the couscous as a bed for the turkey and the vegetables around the slices and the jus on the side.
2 cups couscous