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Bubble Up King Cake Casserole with Icing and Festive Sugar Recipe

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4.2 from 8 reviews

A festive and easy-to-make Bubble Up King Cake casserole that transforms canned cinnamon rolls into a delicious overnight dessert. This recipe layers chunks of cinnamon rolls soaked in a rich egg and milk mixture, baked to golden perfection, then topped with sweet icing and colorful yellow, green, and purple decorating sugar for a vibrant celebration treat.

Ingredients

Main Ingredients

  • 2 cans cinnamon rolls
  • ½ cup milk
  • 4 eggs
  • 1 teaspoon vanilla extract
  • Icing from cinnamon rolls (included in the cans)
  • Yellow, green, purple decorating sugar

Instructions

  1. Prepare the Pan: Grease a 9×13-inch casserole pan thoroughly with butter or non-stick spray to prevent sticking and help with easy cleanup.
  2. Cut the Cinnamon Rolls: Cut each cinnamon roll into approximately six pieces. Arrange these pieces in an even layer at the bottom of the greased casserole pan.
  3. Make the Custard Mixture: In a medium mixing bowl, whisk together the milk, eggs, and vanilla extract until well combined. Pour this mixture evenly over the cinnamon roll pieces in the pan, ensuring all pieces are saturated.
  4. Chill Overnight: Cover the casserole pan tightly with plastic wrap or a lid and refrigerate overnight to allow the cinnamon rolls to soak up the custard mixture, ensuring a moist and tender bake.
  5. Preheat Oven: When ready to bake, preheat your oven to 375°F (190°C).
  6. Bake the Casserole: Place the chilled casserole pan in the preheated oven and bake for 20 to 25 minutes. Bake until the top is golden brown and the custard has set. Remove from oven and let cool for 4 to 6 minutes to set further.
  7. Prepare Icing: Spoon the icing from the cinnamon roll cans into a small microwave-safe bowl. Microwave for about 10 seconds to thin it slightly, making it easier to drizzle.
  8. Decorate and Serve: Drizzle the warmed icing over the warm casserole evenly. Finish by sprinkling the yellow, green, and purple decorating sugar on top to create the classic Mardi Gras colors typical of a King Cake. Serve warm and enjoy!

Notes

  • For best texture, do not skip the overnight soak in the refrigerator; it helps the cinnamon rolls absorb the custard mixture fully.
  • You can substitute milk with a dairy-free alternative if preferred.
  • Use gloves or a small spoon to sprinkle decorating sugar evenly without clumping.
  • This recipe is perfect for a Mardi Gras themed brunch or dessert party.