Add the strawberries to a high-speed blender along with the non-dairy milk, yogurt, maple syrup, vanilla, lemon juice, and salt. Blend on high for 45 to 60 seconds until the berries are finely blended into the milk.

In a large bowl, add the oats and chia seeds and mix well. Pour the strawberry milk into the bowl, then add the chopped strawberries. Stir until everything is combined. Let sit for at least 5 minutes.

Transfer the oatmeal to jars or other containers, then store in the fridge for at least 4 hours, preferably overnight. Top as desired and enjoy cold or warm; leftovers will keep in the fridge for up to 5 days.