Mix the dry ingredients. In a bowl or jar, combine rolled oats, chia seeds, cinnamon, and a pinch of salt; stir well.
½ cup rolled oats, 1 tbsp chia seeds, Pinch of salt, ⅛ tsp cinnamon
Mix the protein mixture. In a separate container, mix milk, protein powder, and liquid sweetener until smooth, using a protein shaker if available.
6 tbsp milk of choice, 1 scoop protein powder, 1 tsp liquid sweetener
Add the wet mixture. Pour the wet mixture into the dry ingredients and stir thoroughly to ensure oats are fully soaked.
Chill. Cover and refrigerate for at least 6 hours or overnight.
Top and serve. In the morning, stir the oats again and add toppings like fresh fruit or nuts before serving.