As we explain in the post for u003ca href=u0022https://twohealthykitchens.com/cool-and-creamy-5-minute-no-cook-blueberry-almond-oatmeal-with-make-ahead-overnight-oats-option-too/u0022u003eEasy Blueberry Overnight Oatsu003c/au003e, quick oats are rolled thinner than old-fashioned oats. In a no-bake recipe like this, old-fashioned oats can be a bit too thick and chewy for some people's liking. In a pinch, you can try using old-fashioned oats. But in general, I really recommend sticking with the thinner, less dense quick oats to get the best texture in this recipe.