Preheat oven to 450 degrees. Spray nonstick olive oil baking spray on the 9 x 13 inch baking pan.
Stir olive oil, dried thyme, rosemary, garlic, salt, and pepper in a large bowl.
Add the potatoes, onions, and carrots to the bowl.
Toss to mix the seasonings and vegetables until well coated. Transfer the vegetables onto the prepared baking dish.
Bake at 450 degrees for 30-45 minutes.
Check to make sure the vegetables are fully baked before removing them from the oven. Return to the oven to brown the vegetables.
Stir to mix up the vegetables to allow them to become crisp. Sprinkle the chopped fresh parsley.
Enjoy!