Step 1: Preheat and Prepare

Preheat your oven to 350°F (175°C). Line two 12-cup muffin tins with cupcake liners.

Step 2: Make the Cupcakes

Prepare the Funfetti cake mix according to the box instructions.

Add the ground cinnamon to the batter and mix until just combined.

Fill the cupcake liners about two-thirds full with batter.

Bake the cupcakes until a toothpick inserted into the center has moist crumbs, 24 to 26 minutes.

Step 3: Cool the Cupcakes

Remove the cupcakes from the oven and let them cool in the muffin tins for a few minutes before transferring them to a wire rack to cool completely.

Step 4: Make the Frosting

While the cupcakes are cooling, make the frosting. In a large bowl, using a hand mixer, whip the softened butter until it’s light and fluffy.

Gradually add the powdered sugar, beating until smooth.

Add the melted white chocolate, milk, vanilla extract, and salt, and mix until the frosting is smooth and creamy.

Gently fold in the sprinkles until they’re evenly distributed.

Step 5: Frost and Decorate

Once the cupcakes are completely cool, frost each cupcake, leaving a small dome at the top. This mimics the look of the original Dunkaroo dip.

Top the frosted cupcakes with more sprinkles and Birthday Cake Teddy Grahams.