Preheat the oven to 400℉.
Prep the carrots and the potatoes. Cut the carrots at least an inch thick.
In a bowl, toss the carrots and potatoes in oil. Then add Italian seasoning, salt and black pepper.
Oil the sheet pan as well with about 1 tablespoon of cooking oil.
Place the seasoned carrots and potatoes in the sheet pan. Make sure the potatoes are all facing flesh side down in the sheet pan.
Bake the roasted potatoes and carrots for 30 minutes. Then, pour melted butter in the pan and swirl the butter to touch all the ingredients. Place the pan back into the oven for 10 minutes.
Lastly, once done cooking allow the ingredients to cool a bit then serve.