Creamy Spinach Banana Smoothie: Green Hulk Breakfast Shake

This spinach-banana smoothie comes together in about five minutes. It’s filling, balanced, and tasty — the vibrant green color makes it a playful option for kids.

Spinach banana smoothies in toddler glass tumblers with silicone sleeves.

Often called a “Hulk smoothie,” this drink doubles as a quick breakfast or a satisfying snack. Rolled oats add fiber and whole grains to keep little ones full between meals, while peanut butter contributes protein and healthy fats. When my kids don’t want a full plate, or when I want something filling to hold them until dinner, this smoothie is a reliable go-to.

If you enjoy this Hulk smoothie, try the banana carrot smoothie for a carrot-cake–inspired option.

Table of Contents

  • What You’ll Need
  • Ingredient Substitutions & Additions
  • Step By Step Instructions
  • Storage Instructions
  • Tips For Success
  • Other Spinach Recipes You’ll Love
  • Spinach Banana Smoothie (Hulk Smoothie) Recipe

What You’ll Need

Ingredients for this spinach-banana smoothie:

Ingredients to make spinach banana smoothie.
  • Spinach: Adds vitamins and gives the smoothie its bright green color.
  • Bananas: The natural sweetener. Choose very ripe bananas with brown spots for the best sweetness.
  • Rolled Oats: Provide fiber and whole grains to make the smoothie more filling. Use gluten-free oats if needed.
  • Milk: Whole milk works well; dairy-free alternatives like oat or coconut milk are fine substitutes.
  • Cinnamon: A pinch of warm spice for added flavor.
  • Peanut Butter: Adds protein, healthy fats, and flavor. Use natural peanut butter when possible, or substitute another nut or seed butter.
  • Ice Cubes: For a chilly, thick texture.

See the recipe card below for exact quantities.

Ingredient Substitutions & Additions

  • Milk: Swap for any plant-based milk if you prefer dairy-free.
  • Peanut Butter: Replace with almond butter, sunflower seed butter, or omit entirely for a nut-free version.

Step By Step Instructions

STEP 1: Combine all ingredients in a blender and blend until smooth. If the mixture is too thick to blend, add a splash more milk.

STEP 2: Pour into cups and serve immediately.

Steps to make spinach banana smoothies.

Storage Instructions

Best eaten fresh. You can freeze the smoothie in an airtight container for up to one month. Thaw overnight in the refrigerator or let it sit at room temperature for a few hours, then shake or stir before serving. Another option is to freeze the smoothie in ice cube trays, store the cubes in a sealed container, and blend a few cubes with a splash of milk when you’re ready.

Spinach banana smoothies in toddler glass tumblers with silicone sleeves.

Tips For Success

  • Use overripe bananas for the sweetest flavor. If your bananas aren’t ripe enough, add a small amount of maple syrup or honey.
  • Blend until completely smooth so there are no oat chunks. A high-speed blender helps achieve a silky texture.
  • If using frozen bananas, reduce the ice or increase the milk slightly to help the blender.
  • Serve in small, easy-to-grip cups for kids — toddler-sized tumblers with silicone sleeves work particularly well.
Spinach banana smoothies in toddler glass tumblers with silicone sleeves.

Other Spinach Recipes You’ll Love

DFDairy-FreeGFGluten-FreeNFNut-FreeVVegetarian

Spinach Apple Baby Puffs

DFDairy-FreeGFGluten-FreeNFNut-FreeVVegetarian

Spinach Banana Pancakes

GFGluten-FreeNFNut-FreeVVegetarian

Spinach Banana Muffins

EFEgg-FreeVVegetarian

Hulk Pasta (Spinach Pesto)

Spinach banana smoothies in toddler glass tumblers with silicone sleeves.
5 from 13 votes

Spinach Banana Smoothie (Hulk Smoothie)

By: Lily Payen
This spinach-banana smoothie comes together in 5 minutes and is filling, balanced, and delicious. The bright green color makes it a fun drink for little ones.
Prep: 5 minutes
Total: 5 minutes
Servings: 2 servings
Pin Recipe
Rate Recipe
Print Recipe

Ingredients 

  • 2 small or 1.5 large overripe bananas, (about 1 ¼ cups sliced bananas)
  • ¼ cup rolled oats
  • ¾ cups milk
  • 2 tbsp peanut butter
  • ¼ cup spinach, packed, (about 1 handful)
  • ¼ tsp ground cinnamon
  • 1 cup ice cubes

Instructions 

  • Add all ingredients to a blender and blend until smooth. If it’s too thick, add a little more milk.
  • Pour into cups and enjoy.

Notes

  • Use overripe bananas for the best natural sweetness. Add a touch of maple syrup if you prefer it sweeter.
  • Blend thoroughly so no oat bits remain; a high-speed blender helps achieve a smooth texture.
  • If using frozen bananas, reduce the ice or add more milk to help blending.
  • Serve in small tumblers for kids — they’re the right size and easy to hold.

Nutrition

Calories: 250.8kcal, Carbohydrates: 30.54g, Protein: 8.79g, Fat: 12.01g

Like this recipe? Rate and comment below!