01 - In a medium mixing bowl or mason jar, add rolled oats, milk, brewed coffee, packed brown sugar, Greek yogurt if using, chia seeds if using, vanilla extract, and a pinch of salt. Mix thoroughly to ensure even distribution.
02 - Cover tightly and refrigerate for at least 8 hours or overnight, allowing the oats to fully absorb the liquid and flavors.
03 - In the morning, stir the oats well. Add an extra splash of milk if a looser texture is preferred.
04 - Divide the oats into serving bowls or jars. Top each portion with sliced banana, chopped toasted nuts, and extra brown sugar or maple syrup to taste.
05 - Serve the oats cold for a refreshing and energizing breakfast.