In a blender, add frozen mango chunks and pineapple chunks.
Pour in coconut milk and Greek yogurt.
Sprinkle cinnamon over the ingredients.
If desired, add honey or maple syrup for sweetness.
Blend until smooth and creamy, adding more liquid if needed.
Pour into glasses and serve immediately for best taste and texture.
Enjoy your homemade mango pineapple coconut smoothie and its delicious tropical flavors!