Prepare the carrots: Peel and slice the carrots into even rounds so they cook evenly.
Cook the carrots: Place the sliced carrots in a medium pot. Add the water and bring to a gentle simmer. Cook for about 10–15 minutes until just tender but not mushy.
Make the glaze: Drain most of the excess water, leaving just a tablespoon or two in the pot. Add the butter, brown sugar, salt, and cinnamon.
Glaze: Cook on low heat, stirring gently, until the butter melts and the sugar dissolves. Allow the carrots to simmer for another 5 minutes until glossy and slightly caramelised.
Serve: Taste and adjust sweetness if needed. Serve warm.