01 - Combine Greek yogurt, softened whipped cream cheese, and vanilla protein powder in a medium mixing bowl. Beat with hand mixer or whisk until completely smooth and creamy, ensuring no lumps remain.
02 - Pour in powdered sugar and vanilla extract. Continue mixing until fully incorporated and the mixture reaches a uniform, silky consistency.
03 - If the dip appears too thick, gradually add milk one tablespoon at a time, mixing thoroughly after each addition, until desired dipping consistency is achieved.
04 - Gently fold in rainbow sprinkles using a spatula, being careful not to overmix and crush the sprinkles.
05 - Transfer the dip to an attractive serving bowl and sprinkle additional rainbow sprinkles over the top for garnish. Serve immediately alongside graham crackers, animal crackers, fresh fruit slices, or pretzels.