In a large mixing bowl, combine the non-fat plain Greek yogurt and vanilla whey protein powder until smooth.

Stir in the heat-treated flour, sweetener, and cake batter extract until fully incorporated.

Gently fold in 1.5 tablespoons of the rainbow sprinkles.

Transfer the dip to a serving bowl and garnish with the remaining sprinkles.

Serve immediately with graham crackers or apple slices, or refrigerate for 30 minutes for a firmer texture.