Zest the key lime, then add the zest and juice to a small container. Add the Greek yogurt and milk, then stir to combine.
key lime, 1/3 cup Greek yogurt, 1/3 cup milk
Add the oats, then chia seeds, flax seeds, and protein powder. Carefully whisk together to combine.
1/4 cup old-fashioned oats, 1 tablespoon chia seeds, 1 tablespoon ground flax seeds, 1 scoop vanilla protein powder
Seal the lid to the jar, then place in the fridge overnight, or for at least 4 hours until set.
Before consuming, check the texture - sometimes different protein powders can absorb more, or you may prefer a looser overnight oat. If that's the case, add a little more milk before consuming, until you get the texture you desire. Serve and enjoy!
Notes
Nutrition information is just an approximation and was calculated using Fairlife fat free milk and Clean Simple Eats vanilla protein powder.