Combine frozen berries, whey protein, Greek yogurt, and almond milk in a high-speed blender.

Pulse and blend on high until a thick, soft-serve consistency is achieved, adding more milk one teaspoon at a time only if necessary to facilitate blending.

Transfer the mixture to a chilled bowl and smooth the surface with a spatula.

Arrange banana slices, hemp hearts, chia seeds, and granola in distinct rows across the top of the smoothie base.

Serve immediately to maintain the frozen, semi-solid texture.