1 cup rolled oats
1 1/4 cups unsweetened vanilla-flavored almond milk, divided
1 frozen banana, chopped
1 cup blueberries
1 teaspoon vanilla extract
1 teaspoon maple syrup, or to taste
2 tablespoons flaked coconut
1 tablespoon fresh blueberries
1 teaspoon chia seeds
Combine oats and 2/3 cup almond milk in a bowl; refrigerate until oats have absorbed the liquid, 8 hours to overnight.
Combine oats-almond milk mixture, remaining almond milk, banana, 1 cup blueberries, vanilla extract, and maple syrup in a blender; blend until smooth.
Pour smoothie into 2 bowls and top with coconut, 1 tablespoon blueberries, and chia seeds.