Stir the wet ingredients. In a medium bowl, mix peanut butter, honey, and vanilla until smooth and glossy.
If your peanut butter is stiff, warm it for 10–15 seconds in the microwave to loosen.
Add the dry ingredients. Stir in oats, ground flax or chia, and salt. Fold in any add-ins, such as chocolate chips or dried fruit. The mixture should feel thick and slightly sticky.
Adjust the texture if needed. If it’s too crumbly to hold a ball, add a teaspoon of water or milk at a time until it presses together easily.
If it’s too wet, sprinkle in a bit more oats or flax.
Chill briefly. Cover and chill the mixture for 15–20 minutes. This helps it firm up and makes rolling easier.
Roll into bites. Scoop about 1 tablespoon of mixture and roll into balls. Aim for 1–1.5-inch bites for easy snacking.
Set and store. Place bites on a parchment-lined plate or container.
Chill for 30 minutes to set. Store in an airtight container in the fridge.