To make the cake:
Preheat your oven to 325 degrees.
In a large bowl, cream the butter and sugar together until light and fluffy (approximately 5 minutes).
Add your cake batter flavor and mix.
Add the eggs one at a time mixing only until combined after each addition.
Add the flour to the batter, alternating with the sour cream, beginning and ending with flour.
Then fold ½ c of the sprinkles into the batter.
Spray your 12-cup bundt pan with Baker's Joy baking spray or similar. Then pour the batter evenly into your prepared bundt pan.
Bake for 1 hour and 15 minutes or until the cake is golden brown. (Insert a wooden toothpick into the center of the cake. The cake is done when the toothpick comes out clean or with moist crumbs.)
Allow the cake to cool before removing it from the pan to complete the cooling process.
To make the glaze:
Add the powdered sugar, cake batter flavor and condensed milk to a bowl.
Slowly add in the milk and mix until you reach your desired consistency.
Glaze your cake as desired then top it with the sprinkles.
Once the glaze has set, serve and enjoy!