These lemon-blueberry overnight oats are layered with creamy oats and a sweet blueberry syrup, with a garnish of fresh blueberries and lemon zest to bring the flavors together. Frozen blueberries work well too, but to get the right texture for the syrup you will need to use 2¼ cups frozen blueberries, 3 tablespoons plus 2 teaspoons maple syrup and 1½ tablespoons lemon juice.
