Hello there. Achieving a truly creamy consistency with overnight oats comes down to balancing your grain absorption with both a liquid base and a dairy or non-dairy fat component.
When overnight oats turn out overly dense or cement-like, it is usually because high-absorption additions, like chia seeds or protein powder, soak up all available liquid without enough compensating moisture. For a consistently creamy and spoonable texture, a reliable baseline ratio is 1 part rolled oats to 1 part milk, plus 1/2 part yogurt.
For a single standard serving, you can measure it out as follows:
1/2 cup old-fashioned rolled oats
1/2 cup milk of your choice (dairy, oat, almond, or soy)
1/4 cup plain Greek yogurt or whole milk yogurt
1 tablespoon chia seeds or ground flaxseed
1 tablespoon pure maple syrup or honey
A small pinch of kosher salt
The yogurt is the key ingredient that provides silkiness and prevents the mixture from turning gummy. If you prefer not to use yogurt, you will want to increase your liquid ratio to about 3/4 cup of milk per 1/2 cup of rolled oats.
After combining everything in your jar or container, give it a thorough stir so the chia seeds do not settle and clump at the bottom. Let it rest in the refrigerator for at least six hours. If you find the texture is still slightly thicker than you prefer when you open it up before your weekend barbecue, simply stir in an extra splash of milk right before serving.