Place peeled and washed carrots in 9x13 baking pan.
Add butter to a small saucepan and cook over medium-low heat for 4-6 minutes. Stir often, watching the color of the butter. As soon as the milk solids at the bottom of the pan are just slightly brown, immediately remove from the heat.
Stir the remaining ingredients into the butter and pour over the carrots. Toss carrots so they are well coated.
Bake at 400°F for 40-60 minutes, until they are fork tender. Cook time will vary based on the size of the carrots.
Serve the carrots with an butter from the pan poured over top and garnished with a sprig of thyme.
Notes
To speed up the cooking time, slice the carrots in half lengthwise.