In a small cup or bowl, mix instant coffee or instant espresso with 4 ounces of hot water. Mix until powder is dissolved.
In two small containers or mason jars, add to each container: 2 oz. coffee, 2 tbsp chia seeds, 1/3 cup milk, 1/2 scoop protein powder, 1/2 cup plain Greek yogurt, 1 tbsp maple syrup, and 1/2 tsp vanilla extract. Note: You can also mix the entire recipe in a large bowl and then transfer to two small containers.
Cover and allow to set in the fridge for at least 2 hours or overnight.