This hearty breakfast casserole layers crumbled breakfast sausage with cubes of crusty bread, tart cranberries, and sautéed aromatics in a rich egg-and-cream custard. Seasoned with sage and thyme, it bakes until golden and puffed on top while staying moist and tender inside.
It's an ideal make-ahead dish for holiday mornings — assemble the night before, then simply bake. Each serving delivers comforting flavors with a balance of savory, slightly sweet, and herbaceous notes.
The Thanksgiving after my daughter learned to walk she toddled into the kitchen at dawn and pulled open the oven door while I was browning sausage for stuffing. That clatter woke the whole house but somehow led to the best accidental breakfast invention Ive ever stumbled into. I dumped cranberries and bread cubes straight into the skillet with the sausage, poured eggs over the whole thing, and shoved it in the oven without measuring anything. Ten years later this casserole is the reason nobody in my family sleeps past seven on holidays.
My neighbor Dave stopped by one December morning to borrow a ladder and walked into a kitchen smelling of sage and browned butter. He ended up staying for forty five minutes eating two helpings and never did get that ladder. His wife called later asking what spell I had cast on him.
Ingredients
- 1 pound breakfast sausage, casing removed: Pork brings the most flavor but turkey works if that is what you have. Brown it well because that fond on the bottom of the pan is liquid gold.
- 1 medium onion, finely chopped: Yellow onion adds sweetness that balances the tart cranberries.
- 2 celery stalks, diced: Dice these small so nobody gets a stringy surprise in their breakfast.
- 1 cup fresh or frozen cranberries: Fresh cranberries pop in the oven and create little pockets of brightness throughout the casserole.
- 6 cups cubed day old bread: Sourdough is my favorite because its tang plays beautifully with the richness of the custard. Stale bread soaks up the eggs without turning to mush.
- 1 and 1/2 cups whole milk and 1 cup heavy cream: The combination of milk and cream makes a custard that is silky but not heavy.
- 6 large eggs: This is the glue that holds everything together and creates that puffy golden top.
- 1 cup shredded sharp cheddar cheese: Sharp cheddar stands up to the bold sausage flavor better than mild varieties ever could.
- 1/4 cup grated Parmesan cheese (optional): A sprinkle of Parmesan on top creates a salty crust that makes people fight over the corner pieces.
- 2 tablespoons chopped fresh parsley: Parsley adds a fresh finish that keeps the dish from feeling too heavy.
- 2 teaspoons dried sage: Sage is what makes this taste like the holidays in every single bite.
- 1 teaspoon dried thyme: Thyme adds an earthy layer that rounds everything out quietly.
- 3/4 teaspoon kosher salt and 1/2 teaspoon black pepper: Season boldly because the bread and eggs mellow everything during baking.
- 1/4 teaspoon crushed red pepper flakes (optional): Just a pinch wakes up the whole dish without making it spicy.
- Butter or nonstick spray for greasing: Butter adds flavor to the edges where the casserole gets crispy.
Instructions
- Prepare your baking dish and oven:
- Heat your oven to 350 degrees and generously butter a 9 by 13 inch baking dish making sure to get into the corners where sticking happens most.
- Brown the sausage:
- Break the sausage into crumbles in a large skillet over medium heat and let it sit undisturbed for a minute or two so real browning happens before you stir. Cook until no pink remains which should take about seven minutes then transfer it to a plate with a slotted spoon.
- Soften the aromatics:
- In the same skillet with all those flavorful sausage drippings cook the onion and celery until they are soft and translucent about five minutes. Your kitchen should smell incredible right now.
- Combine the filling:
- In a very large bowl toss together the bread cubes cooked sausage onions celery and cranberries along with the parsley sage thyme salt pepper and red pepper flakes if you are using them. Get your hands in there and mix it gently so the bread does not get crushed.
- Make the custard:
- Whisk the milk cream and eggs together in a separate bowl until smooth then stir in the cheddar and Parmesan if using. Pour this luscious mixture over the bread and fold gently until every cube is coated and moistened.
- Let it rest and bake:
- Transfer everything to your prepared dish spread it evenly and walk away for ten minutes so the bread can drink up all that custard. Bake uncovered for forty five to fifty minutes until the top is deeply golden and the center is set when you give the dish a gentle shake.
- Cool slightly and serve:
- Let the casserole rest for about ten minutes before slicing so the pieces hold together beautifully. Garnish with extra parsley if you want it to look as good as it tastes.
One Christmas morning my mother in law walked in while I was pulling this from the oven and declared it the most beautiful thing she had ever seen. She was talking about the casserole but I have never been entirely sure.
Make It Your Own
Dried cranberries work if fresh ones are not around but soak them in hot water for ten minutes first or they will steal moisture from the custard. For a meatless version sautéed mushrooms or cooked lentils fill the sausage role surprisingly well and let the cranberries shine even brighter.
Serving Thoughts
This casserole is rich enough to stand alone but a simple green salad with vinaigrette cuts through it perfectly. A bowl of orange segments or grapefruit on the side brings color and freshness to the table without any extra effort.
Storage and Reheating
Leftovers keep in the refrigerator for up to four days and reheat in a 325 degree oven for about fifteen minutes which actually crisps the top even better than the first day. You can freeze individual portions wrapped tightly for up to two months though the texture of the bread softens slightly upon thawing.
- Cover the dish tightly with foil if reheating the whole thing so the top does not overbrown.
- A microwave works for single servings in a pinch but the oven gives you that crispy edge back.
- Always let frozen portions thaw overnight in the refrigerator before reheating for the best texture.
Some mornings you just need breakfast to feel like an event without actually creating a lot of events. This casserole does exactly that.
Recipe Questions & Answers
- → Can I assemble this casserole the night before?
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Yes. Prepare the casserole through step 7, cover tightly, and refrigerate overnight. In the morning, let it sit at room temperature for about 20 minutes while the oven preheats, then bake as directed. You may need to add 5–10 extra minutes of baking time if going straight from the refrigerator.
- → Can I use dried cranberries instead of fresh?
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Absolutely. Use 2/3 cup of dried cranberries and soak them in hot water for about 10 minutes to plump them up, then drain well before adding to the mixture. This prevents them from drawing moisture out of the casserole during baking.
- → What type of bread works best?
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Day-old French bread or sourdough works best because it holds its structure when soaked in the custard. Avoid soft sandwich bread, which can turn mushy. Cut the bread into even cubes and let it stale overnight for optimal texture.
- → How do I know when the casserole is fully cooked?
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The casserole is done when the top is golden brown and the center is set — a knife inserted into the middle should come out clean. The internal temperature should reach 160°F (71°C). If the top browns too quickly, tent it loosely with foil.
- → Can I make a vegetarian version?
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Yes. Simply omit the sausage and add sautéed mushrooms or cooked lentils for substance. You may want to increase the salt and seasonings slightly, as sausage contributes significant flavor. A splash of smoked paprika can add depth.
- → How should I store and reheat leftovers?
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Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave for 60–90 seconds, or warm the whole dish in a 325°F (165°C) oven covered with foil for about 20 minutes.