Pour the oat milk into your blender.
Add the frozen banana, followed by the chocolate whey protein and almond butter.
Sprinkle in the raw cacao powder, and if you prefer a touch of sweetness, include the agave syrup.
Drizzle in the almond extract for an extra layer of flavor.
Toss in the crushed ice.
Blend everything together on high until you achieve a silky, smooth consistency, which should take around 30-60 seconds.
Once blended, taste and adjust the sweetness if necessary by adding more agave syrup.
Serve the smoothie in a tall glass and savor it right away.