Place turkey breast on an aluminum foil lined baking sheet with high sides (a roasting pan can be used as well).
In a small bowl, mix together herbs. Spread the mixture under the skin of the breast (directly on the meat),as evenly as possible.
Place a piece of aluminum foil loosely over the turkey breast to prevent it from browning too fast and place it into the oven.
Roast for 1 hour.
For the Veggies
In a large bowl, toss the chopped veggies and onion with the melted butter and spices to coat evenly.
Increase your oven temperature to 400F.
Remove the turkey breast from the oven and remove the top aluminum foil. If any drippings have collected in the pan from the turkey, carefully drain those drippings into a heat-proof container using a baster or small ladle. (Save this to make gravy.*)
Arrange the veggies around the bird and return the pan to the oven.
Roast for an additional 20-30 minutes, until the veggies are golden brown and tender. The turkey is done when a thermometer inserted into the thickest part of the breast reads 165F.
Remove the pan from the oven and let the turkey rest 5-10 minutes before carving.
Notes
*To make your drippings into gravy: Place the drippings and juice into a small saucepan. Heating over medium-low heat, whisk 1 tablespoon of flour into the drippings, until smooth. Slowly pour 1 cup of chicken broth into the pan, whisking constantly. Turn your heat to medium-high and heat the gravy to a simmer, whisking often. The gravy will thicken as it starts to simmer. Remove the pan from the heat once the gravy has thickened slightly. (The gravy will thicken slightly as it cools as well.) - Any nutrition information provided is approximate, based on using potatoes and carrots.