Overnight Cinnamon Roll Casserole

This overnight cinnamon roll casserole starts with two cans of refrigerator dough and turns them into a buttery, custard-soaked breakfast. The torn pieces soak up an eggy mixture as they chill, so the center bakes gooey and soft while the top gets golden and crisp.

Drizzle the included cream cheese icing over the whole thing the moment it comes out of the oven. It melts into every crevice, and you get that just-frosted cinnamon roll taste without rolling a single swirl.

Why This Cinnamon Roll Casserole Works

The custard does all the work overnight. A simple mix of eggs, milk, and cream soaks into the dough, giving you a texture that is part bread pudding and part cinnamon roll center.

It bakes in one dish and feeds a crowd. The edges puff and brown while the middle stays tender, so every spoonful has a little crunch and a lot of soft, cinnamon-spiced dough.

The canned icing gets a small upgrade. You warm it slightly so it pours easily, and it turns into a glossy glaze that drips into the cracks while the casserole is still hot.

Ingredients

• 2 cans (17.5 oz each) refrigerated jumbo cinnamon rolls with icing: use the flaky, buttery kind, not the smaller biscuit style
• 4 large eggs: room temperature eggs blend into the custard more smoothly
• 1 cup whole milk: 2% works, but whole milk gives a richer custard
• 1/2 cup heavy cream: adds the velvety texture that keeps the center from drying out
• 2 tsp vanilla extract: rounds out the cinnamon without taking over
• 1 tsp ground cinnamon: an extra boost since the dough already carries some spice
• 2 tbsp unsalted butter, cut into small cubes: dots the top before baking and helps the surface brown
• Pinch of salt: just enough to wake up the sweetness

Variations / Substitutions

• Use a different icing: warm the cans of icing and whisk in 2 oz of softened cream cheese for a tangier, thicker glaze.
• Add pecans: scatter 1/2 cup chopped toasted pecans over the custard before baking for a nutty crunch.
• Go dairy-free: swap the milk and cream for full-fat oat milk and use a plant-based butter stick; the texture will be slightly lighter but still custardy.
• Use homemade cinnamon rolls: tear unbaked, raw homemade cinnamon roll dough (without rising) into pieces and increase the bake time by 5 to 8 minutes; keep an eye on the center for doneness.

For a classic pan of spiraled rolls with no casserole twist, try my Small-Batch Cinnamon Rolls.

How to Make Overnight Cinnamon Roll Casserole

Step 1: Tear the Cinnamon Rolls

Open both cans of 2 cans (17.5 oz each) refrigerated jumbo cinnamon rolls and set the icing packets aside. Tear each roll into 4 to 5 irregular pieces and drop them into a greased 9×13-inch baking dish. The pieces will look uneven, and those uneven edges are exactly what you want because they catch the custard and crisp up in the oven.

Spread the pieces so they cover the bottom in an even layer with a few gaps. Those gaps allow the custard to pool underneath, which keeps the whole thing from baking into a solid block.

Step 2: Whisk the Custard

In a large bowl, whisk 4 large eggs, 1 cup whole milk, 1/2 cup heavy cream, 2 tsp vanilla extract, 1 tsp ground cinnamon, and a pinch of salt until the mixture is smooth and no streaks of egg white remain. The custard will look pale yellow with tiny cinnamon flecks floating on top.

Pour the custard slowly over the torn dough, making sure to coat the pieces that are peeking up. Use a spatula to gently press the dough into the liquid so every piece gets a little soak before it goes into the fridge.

Step 3: Assemble and Soak

Dot the top of the soaked dough with the small cubes from 2 tbsp unsalted butter. Cover the dish tightly with plastic wrap or a lid and refrigerate it for at least 8 hours, or overnight. The dough will drink up most of the liquid as it sits, puffing slightly and turning soft enough to press with a finger.

An overnight rest is what gives you that pudding-like center, but if you are short on time, let the dish sit at room temperature for 30 minutes. The finished texture will be more like a baked French toast casserole, still good but less custardy in the middle.

Step 4: Bake Until Puffed and Golden

Preheat the oven to 350°F (175°C). Take the dish out of the fridge, uncover it, and let it sit on the counter while the oven heats. Bake for 35 minutes, until the top is deep golden brown and the center registers 190°F (88°C) on an instant-read thermometer. The edges will be crisp and pulling away from the sides, and the center will feel set when you press it lightly with the back of a spoon.

If the top browns too quickly, tent a piece of foil over the dish for the last 8 to 10 minutes. Remove it from the oven and let the casserole rest for 5 minutes so the custard can finish setting before you add the icing.

Step 5: Drizzle and Serve

While the casserole is still warm, empty the reserved icing packets into a small bowl and microwave them for 10 seconds, just until the icing loosens to a pourable consistency. Drizzle the warm icing over the whole dish, letting it settle into the cracks and puddles on top.

Scoop generous portions onto plates while the casserole is hot and the icing is still glossy. The center will be soft and custardy, the top edges will crunch, and the cinnamon and cream cheese glaze will be tangled together in every bite.

Tips for the Best Cinnamon Roll Casserole

• Pick the right rolls. The jumbo flaky kind with a papery outer layer give you the most tender, layered texture. Avoid the smaller biscuit-like tubes because they turn dense.
• Use a glass or ceramic baking dish. Metal pans conduct heat faster and can over-brown the bottom before the center sets, so a 9×13-inch glass or ceramic dish bakes most evenly.
• Bring the dish to room temperature first. If you pull it straight from the fridge into a hot oven, the center will take longer to cook while the edges dry out. Let it sit on the counter for 20 minutes while the oven preheats.
• Check for doneness with a thermometer. The center should reach 190°F (88°C). If you do not have one, look for a firm, slightly jiggly center and deeply golden edges.
• Double the drizzle. If you want extra icing, warm the packets with a spoonful of cream cheese or a splash of milk so the drizzle stretches further.

Bake times by pan material:

Pan Material	Bake Time	Visual Cue
Glass or ceramic	35 mins	Deep golden top, center just set
Metal	32 mins	Golden edges, check center 2 minutes early

Storing Leftover Casserole

• Refrigerate: cover the cooled casserole tightly and store it in the fridge for up to 3 days. The center stays soft as it chills.
• Reheating: warm individual portions in the microwave for 30 to 45 seconds. To recrisp the top, place a piece in a 350°F (175°C) oven for 6 to 8 minutes.
• Serve cold: the custard firms up when chilled, so you can eat leftovers cold right from the fridge with an extra drizzle of icing.

What to Serve with Cinnamon Roll Casserole

A big spoonful of this casserole is rich on its own, so I like to balance it with something fresh and something savory. Sliced oranges or a citrus salad cut through the sweetness, and crisp bacon or breakfast sausage on the side adds salt and crunch. Pour strong black coffee and the meal feels complete without a lot of extra work.

Frequently Asked Questions

Can I use homemade cinnamon roll dough?

Yes. Tear raw, unrisen homemade cinnamon roll dough into pieces and increase the bake time by 5 to 8 minutes. Keep an eye on the center because home dough can brown faster.

What if I forget to soak it overnight?

You can let the assembled dish sit at room temperature for 30 minutes instead. The center will have a firmer, more bread-pudding texture rather than a soft custard soak, but it still works.

Can I make this dairy-free?

Absolutely. Replace the milk and heavy cream with the same amount of full-fat oat milk. Use a plant-based butter stick for the dots on top. The top will still brown and the center will set.

Can I freeze the baked casserole?

Yes. Let it cool completely, then wrap it tightly and freeze for up to 2 months. Thaw overnight in the fridge and reheat in a 350°F (175°C) oven until warmed through, about 15 minutes.

Why did my center turn out soggy?

The dish probably needed a longer bake or a shorter fridge time. Make sure the center hits 190°F (88°C) and that you are using the correct pan material; glass dishes bake more slowly and evenly.