Rather than cutting the carrots into medallions, leave them whole.
Line a baking sheet with aluminum foil
Cook the sauce without the carrots until it reduces 1/3
Use a pastry brush to spread half the sauce on the foil.
Lay the carrots down so they don’t touch each other.
Roll them so they get a light coating on each side
Roast at 400F for 25 minutes
Carrots should be fork-tender
Transfer the carrots to a serving dish
Pour the remaining sauce on top
Serve