I use a very runny, organic peanut butter to make these. If your nut butter is a little harder, you may need to add some water as you mix to get a softer consistency. You can use any oats for this recipe. I used gluten-free jumbo oats but any will do. They can be stored in an airtight container at room temperature for up to 3 days, They stay fresh longest when refrigerated. In the fridge, they will keep well for up to 5 days. If you want to store them for a longer period, you can freeze them. They’ll last for up to 3 months in the freezer. *This post contains affiliate links. I may receive a small commission when you purchase through these links (at no extra cost to you). I only endorse products that I personally use or have tested.