Start by placing the softened cream cheese in a mixing bowl. Allow it to come to room temperature for easier mixing, ensuring a creamy texture.
Add the sour cream to the cream cheese. This will add richness and a tangy flavor that balances the sweetness of the dip.
Sprinkle the chocolate cake mix and powdered sugar into the bowl. Using an electric mixer on medium speed, blend all ingredients until smooth and creamy. Scrape down the sides as needed to ensure everything is fully combined.
Pour in the vanilla extract for flavor and the chocolate cake sprinkles for added texture. Mix until just combined, ensuring the sprinkles are evenly distributed throughout the dip.
Scoop the dip into a serving bowl. For best results, chill in the refrigerator for at least 30 minutes. This will help the flavors meld together beautifully.
Arrange your strawberries, pretzels, and graham crackers around the dip. Enjoy this delightful treat with friends and family, or savor it all on your own!