Preheat oven to 400 °F (205 °C) . Get out a large rimmed baking sheet.
Wash and peel your rainbows. Trim the ends. If you need them to cook faster or if they're quite thick, cut them lengthwise.
2 pounds (908 grams) fresh rainbow carrots
Transfer prepared carrots to the baking sheet and spread out in one single layer. Set aside.
In a small bowl, mix together the melted butter, maple syrup, brown sugar and salt and pepper.
1/4 cup (56 grams) unsalted butter, 1/4 cup (60 ml) maple syrup, 3 tablespoons brown sugar, 1/4 teaspoon salt, 1/8 teaspoon ground black pepper
Bake for 30 to 40 minutes, tossing after 15 minutes, until tender. Towards the end of the baking time, stick around the kitchen to make sure that they don't start to burn (mine were never close to burning, but it's better to be safe than sorry). To test for doneness, start checking at the 25-minute mark by piercing the thickest part of the carrot with a fork. If it goes through easily, the carrots are done.
Remove from oven. Taste for seasonings, mostly salt, and adjust accordingly.
Garnish with fresh herbs and serve.
fresh parsley
If you have leftovers, you can refrigerate them in an airtight container for up to 5 days. Just put them in the microwave to reheat them or broil them a bit until they're hot.