In a medium bowl, mash the banana until mostly smooth with a few small lumps. You want it creamy, not runny.
Stir in the nut or seed butter, vanilla, and honey/maple (if using) until fully combined and glossy.
Add oats, ground flax or chia, cinnamon, and a pinch of salt. Stir until a thick dough forms. If it's too sticky, add 1–2 tablespoons more oats.
Mix in any optional add-ins. Keep pieces tiny for toddler safety and texture.
Pop the bowl in the fridge. This firms things up and makes rolling easier. Patience level: minimal.
Scoop about 1 tablespoon per bite and roll into balls. For young toddlers, make them smaller (about 3/4 tablespoon).
Roll bites in finely shredded coconut or crushed oats for less stickiness on tiny hands.
Place on a parchment-lined plate and refrigerate for 30 minutes to set. Then transfer to an airtight container.