In a large mixing bowl, combine 2 cups rolled oats, 2 cups unsweetened almond milk, 1 cup plain Greek yogurt, 2 tablespoons raw honey, 1 tablespoon ground flaxseed, 1 teaspoon vanilla extract, 1/2 teaspoon ground cinnamon, and 1/4 teaspoon sea salt. Whisk thoroughly for 2-3 minutes until completely smooth and combined.

Fold in 1 cup fresh blueberries and 1 cup fresh strawberries gently into the mixture, reserving a few berries for garnish. Stir until the berries are evenly distributed throughout the creamy base without crushing them excessively.

Divide the mixture evenly among four mason jars or glass containers, filling each about three-quarters full. Cover tightly with lids and refrigerate for at least 8 hours, preferably overnight, allowing the oats to absorb liquid and soften completely.

The healthy summer overnight oats family recipe develops best texture after sitting overnight, but you can prepare it up to five days in advance. This clean eating breakfast actually tastes better on day two or three as flavors meld beautifully.

Before serving, stir each container well and add a splash more almond milk if thicker consistency is preferred. Top with 1/4 cup raw almonds and walnuts combined, 1/2 cup fresh raspberries, and 2 tablespoons unsweetened coconut flakes for crunch and visual appeal.