Prep your blender: Add the milk first so the blades catch more easily. This helps with a smooth blend.
Add the soft ingredients: Drop in the banana, yogurt, vanilla, and nut or seed butter if using.
Layer the frozen fruit: Add the frozen berries on top.
If you’re adding spinach, tuck it in before the berries.
Sweeten to taste: Add honey or maple syrup if you know your child prefers sweeter smoothies. Start small; you can always add more.
Blend until creamy: Start on low, then move to high for 30–45 seconds. Scrape down the sides if needed and blend again until completely smooth.
Adjust texture: If it’s too thick, add a splash more milk.
If it’s too thin, add a few ice cubes or extra frozen fruit and blend again.
Serve right away: Pour into kid-friendly cups with straws. For toddlers, a no-spill cup is a safe bet.