Combine Ingredients: In a blender, add the frozen raspberries, frozen peaches, banana, orange juice, Greek yogurt, and honey (if using).
Blend: Blend on high until smooth and creamy. Add water or milk a little at a time if the smoothie is too thick.
Adjust Sweetness: Taste and adjust sweetness with additional honey or maple syrup, if needed.
Serve: Pour into two glasses and serve immediately. Garnish with a slice of peach or a few raspberries if desired.