Yes, you can. Freeze cooked carrots in an air-tight container for up to 3 months. Freeze raw carrots take a little more work. You should first wash the carrots, peel them, and then cut in into 1/4 inch slices. You will need to blanch them in salted boiling water for 2 minutes. Cool promptly, drain and then store in either an air-tight container or in a zip-top bag. Carrots will last for about 3 months in the freezer.