Add milk and yogurt to the blender first. Liquids on the bottom help everything whirl smoothly.
Drop in the banana and berries. Frozen fruit makes it thick and milkshake-y—highly recommended.
Toss in the spinach. Baby spinach blends smoother and has a milder flavor. Your secret is safe here.
Add nut/seed butter, cinnamon, or vanilla. These make it taste like a treat while adding nutrients.
Blend first, then taste. Only add honey/maple if needed. Many bananas are sweet enough, IMO.
Start low, then ramp to high for 30–45 seconds. Scrape the sides if a berry seeds mutiny starts.
Too thick? Add a splash of milk. Too thin? Add a few ice cubes or more frozen fruit and pulse.
Pour into a kid-friendly cup with a straw. The straw is key—kids love the “smoothie experience.”