Overnight oats are easy to make, healthy and filling. You can customize these basic overnight oats recipes with your favorite milk, fruit, nuts and spices. Try the refrigerator overnight oats recipe for a quick, fresh breakfast. Opt for the slow cooker recipe if you prefer hot, rich flavors in the morning. [ Edit ] Ingredients [ Edit ] Refrigerator Oatmeal 1/2 to 2 cups (78 to 312g) rolled oats 1/2 to 2 cups (118 to 473ml) dairy milk, non-dairy milk or yogurt, plus extra for serving 1 tsp. (2.2g) chia seeds or flax seeds 1 tsp. to 1 tbsp. (4 to 12g) sweetener 1/4 to 1/2 tsp. (0.7 to 1.3g) spice, such as cinnamon 1/2 cup (90g) frozen, fresh or canned fruit 1/4 cup (27g) chopped nuts or dried fruit [ Edit ] Slow Cooker Oatmeal 1 cup (156g) of steel cut oats 1 to 2 cups (175 to 350g) fruit 1.5 cups (355ml) dairy or non-dairy milk, plus additional for serving 1.5 cups (355ml) water 2 tbsp. (24g) brown sugar or other sweetener, plus extra for garnish 1/2 tsp. (1.3g) spic...