Choose your container. A 12–16 oz jar or lidded container works best. Make sure it seals well.

Mix the wet ingredients. In the jar, whisk milk, Greek yogurt, maple syrup, vanilla extract, and a pinch of salt until smooth.

Add the protein powder. Sprinkle it in gradually while whisking to avoid clumps. If you see lumps, keep stirring or use a small frother.

Stir in the dry add-ins. Add oats, chia seeds, brown sugar, and cinnamon. Stir thoroughly so everything is evenly coated.

Adjust thickness. The mix should look a bit runny; the chia and oats will thicken it. If it seems too thick now, add a splash more milk.

Seal and chill. Cover and refrigerate for at least 4 hours, ideally overnight.

Stir and serve. In the morning, give it a good stir. Add more milk if you prefer it looser.

Top it off. Finish with banana slices, chopped nuts, or an extra pinch of cinnamon. A quick drizzle of maple syrup adds shine and sweetness.