Special equipment: four 16-ounce or eight 8-ounce clear containers with lids or mason jars
In a mixing bowl, combine the mixed berries, pineapple and lemon juice; set aside.
In another mixing bowl, combine the oats, cashew milk, honey and cinnamon and let stand for about 10 minutes.
To four 16-ounce or eight 8-ounce clear containers with lids (or mason jars), add an even layer of the pineapple-berry mixture to the bottom of each. Next, fill each container to halfway with the overnight oat mixture, then top with more fruit. Refrigerate overnight. In the morning, top with a dollop of yogurt and a sprinkle of granola, and out the door the kids go.