Preheat and prep: Heat the oven to 350°F (175°C). Line a mini muffin pan with liners or lightly grease it.
Mash and mix wet ingredients: In a medium bowl, mash the banana until smooth.
Whisk in milk, egg, nut/seed butter, maple syrup, and vanilla.
Stir in dry ingredients: Add oats, cinnamon, baking powder, and salt. Stir until the oats are evenly coated and the mixture is thick but scoopable.
Add your mix-ins: Fold in your chosen add-ins. Keep pieces small so they bake evenly and are toddler-friendly.
Rest briefly: Let the batter sit for 5 minutes so the oats hydrate.
This helps the bites hold together.
Fill the pan: Spoon the mixture into the mini muffin cups, packing it down slightly. Fill almost to the top for plump bites.
Bake: Bake 12–15 minutes until set on top and lightly golden at the edges. A toothpick should come out clean or with a few moist crumbs.
Cool: Let them cool in the pan for 5 minutes, then move to a rack to finish cooling.
This prevents sogginess.
Serve: Offer warm or at room temperature. Cut in half for newer eaters if needed.