Select a reusable jar or container with a secure lid, such as a mason jar or a glass food storage container. Make sure it’s clean and dry.

Measure out old-fashioned rolled oats and place them into the jar. Rolled oats are preferred because they absorb the liquid well and create the perfect texture.

Next, add any non-fruit mix-ins to the jar. This can include: nut butter, yogurt, sweeteners, spices, chia seeds.

Pour 1/2 to 3/4 cup of your preferred milk (such as cow’s milk, almond milk, soy milk, or oat milk) over the oats and mix-ins. The liquid should just cover the oats.

Gently stir all the ingredients together to ensure everything is well combined and the oats are fully submerged in the liquid.

Layer your favorite fruits on top of the milk. This can include: fresh fruits, dried fruits, and frozen fruits.

Place the lid securely on the jar or container to keep it airtight. This helps the oats absorb the liquid properly and keeps the mixture fresh.

Place the jar in the refrigerator and let it sit overnight (or for at least 6 hours). This allows the oats to soften and the flavors to meld together.

In the morning, give your overnight oats a good stir and enjoy them cold directly from the jar. If you prefer them warm, you can transfer the oats to a microwave-safe bowl and heat them for 1-2 minutes.