1. Combine milk and cinnamon stick in a large saucepan over medium-high heat; heat 3 minutes or until small bubbles form around inner edge of pot (about 180°). Do not boil.
2. Remove from heat; stir in couscous, apricots, currants, 4 teaspoons brown sugar, and salt. Cover the mixture, and let it stand 15 minutes. Remove and discard cinnamon stick. Divide couscous among each of 4 bowls, and top each with 1 teaspoon melted butter and 1/2 teaspoon brown sugar. Serve immediately.