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Christmas Morning Breakfast Strata

Christmas Morning Breakfast Strata

Christmas Morning Breakfast Strata is a creamy, savory casserole filled with tender cubes of crusty bread, melted cheddar, and seasoned sausage, perfect for an easy holiday brunch. The custardy interior and golden top create comforting textures and bold flavors, making it an ideal easy weekend or holiday morning dish to feed a crowd and relax while the oven does the work.
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Prep Time 10 minutes
Cook Time 50 minutes
Total Time 1 hour
Course Breakfast
Cuisine American
Servings 12 servings
Calories 300 kcal

Equipment

  • Sauté Pan
  • 13x9 inch baking dish
  • Mixing Bowl
  • Whisk

Ingredients
  

  • 1 pound ground breakfast sausage (I used fully cooked chicken apple sausage cut into bite sized pieces) Brown and crumble to develop savory, meaty flavor while providing the primary protein and savory backbone for the strata; pre-cooking ensures even distribution and reduces excess grease before baking.
  • 1 red bell pepper Dice and sauté or roast to add bright, sweet notes and a crisp texture contrast that complements the richness of the sausage and eggs; skin removal is optional depending on preference.
  • 2 cups mushrooms, sliced (I like to use cremini or white) Slice and cook to contribute earthy umami and tender bite, boosting overall mouthfeel; choose cremini or white for mild flavor that melds well with cheeses and eggs.
  • 2 teaspoons salt, divided Season thoughtfully and divide to layer flavor at different stages—use part during vegetable and sausage cooking to draw out moisture and enhance seasoning, and reserve some for the egg custard mix.
  • pepper, to taste Grind or freshly crack to taste for balanced heat and aromatic lift; add gradually to control the spice level and complement the salt without overpowering delicate ingredients.
  • 1 loaf Italian bread, ciabatta or baguette (crusty bread), cut into 1 inch cubes (about 8 cups of bread) Cube and lightly dry to create the foundational bread base that soaks up the egg custard; use crusty Italian, ciabatta, or baguette for structure and a pleasing contrast between crisp edges and custardy interior.
  • 18 large eggs Whisk and bind as the core of the custard that sets the strata, providing rich structure and silkiness; use large eggs for consistent volume and reliable setting behavior in the bake.
  • 1 cup whole milk Mix into the egg mixture to mellow and enrich the custard, adding creaminess and promoting a tender, custardy texture when baked; whole milk balances richness without being overly heavy.
  • 1 1/2 cups cheddar cheese, shredded Shred and sprinkle to introduce sharp, creamy, and slightly salty cheesy pockets that enhance flavor and help with browning; cheddar brings familiar tang and a satisfying melt throughout the strata.
  • butter for baking the dish Grease and dot the baking dish to prevent sticking and encourage even browning around the edges; use enough butter to coat the surface so the strata slides out cleanly and develops a golden crust.

Instructions
 

  • Cook the sausage in a saute pan over medium heat for 3 minutes, breaking it into bite size pieces. (If using fully cooked sausage, add some olive oil to the pan and heat through.): As the sausage hits the warm pan you will hear a gentle sizzle, and within a couple of minutes it should begin to brown at the edges, releasing savory aromas that deepen as it cooks. Breaking it into bite size pieces ensures even distribution in the strata and lets more surface area caramelize, which builds flavor. If using fully cooked sausage and adding oil, the goal is just to heat through and coax some browning without drying it out. Watch the pan and stir frequently so small pieces do not overbrown or burn, because scorched bits will taste bitter. If there is excessive fat pooling, spoon some off to avoid a greasy casserole later.
  • Add the mushrooms, bell peppers, 1 tsp of salt and pepper. Continue to cook for 5 minutes. Let cool.: When the mushrooms and red bell pepper hit the pan, they will release moisture and then begin to concentrate as it evaporates, yielding a deeper aroma and softer texture. The added salt helps draw out moisture from the mushrooms, accelerating browning and intensifying flavor, while pepper introduces warmth. Continue to cook until the vegetables are softened and the mushrooms are golden brown, about five minutes, then remove from heat to cool slightly so they do not make the bread soggy. A common mistake is overcrowding the pan which causes steaming instead of browning; if that happens, cook in batches for better caramelization.
  • Preheat oven to 375 degrees.: As the oven warms you will notice the air becoming dry and hot, which is essential for achieving that crisp top while the interior sets. Allowing the oven to fully preheat ensures even baking time and consistent texture, otherwise the strata may take longer to set or bake unevenly. Placing the dish into a properly preheated oven helps produce a golden surface without overbaking the custard. Avoid slipping the dish in before the oven is ready because that can throw off cooking times and lead to a soggy center.
  • In a bowl, beat the eggs, 1 tsp salt and milk. Add the cheese and stir to combine.: Whisking the eggs with the milk should create a smooth, homogenous custard that smells fresh and slightly sweet. Adding the second teaspoon of salt here guarantees the custard itself is seasoned rather than relying only on the cooked components, which makes the seasoning even. Incorporating the cheddar cheese after beating helps it distribute evenly rather than clumping. Overbeating is not necessary, but under mixing can leave pockets of egg white; whisk until the color is uniform for consistent setting.
  • Butter the 13×9 inch baking dish and add the bread cubes and cooled sausage mixture. Toss to combine.: Greasing the dish with butter encourages a browned edge and prevents sticking, which creates nice presentation when you serve. As you layer in the cubed Italian bread and the cooled vegetable and meat mixture, toss gently so each cube gets some of the flavorful bits. Cooling the mixture before adding prevents the bread from beginning to steam and become soggy prematurely. A frequent error is adding hot fillings to the bread which leads to an oddly dense, wet strata.
  • Pour the egg mixture over the bread and sausage, pressing the bread mixture down gently to soak up some of the egg mixture.: You will see the liquid wick into the cubes, darkening them slightly as they absorb the custard, and pressing gently helps ensure the interior soaks evenly for a uniform custard texture. This step determines how custardy the center becomes, because thorough soaking results in a tender interior, while skimming the top leads to dry pockets. Avoid overpressing which can compact the bread too much and make the texture heavy; gentle, even pressure is best.
  • Cover the dish with foil and bake for 30 minutes.: The covered bake traps steam and lets the custard set without overly browning the top, producing a tender interior that will finish beautifully once uncovered. During this time the kitchen will fill with warm, eggy aromas and the edges will begin to set. Using foil prevents premature crusting; removing it too early risks a cracked, dry top. One common mistake is skipping the covered bake which can cause the top to brown before the middle is fully set.
  • Uncover the dish and continue to bake an additional 20 minutes.: Once uncovered, the surface will start to dry and brown, creating a pleasing golden crust, and the edges will pull slightly away from the dish when fully done. This final bake encourages Maillard browning on the cheese and exposed bread, producing the toasty notes you want. Check for a gentle jiggle in the center; it should be mostly set but still soft, not liquid. Leaving it in too long will result in a dry, firm strata, while removing it too soon means the center may be undercooked.
  • Serve.: As you lift portions, the strata should hold its shape yet feel tender and custardy inside, with pockets of melted cheddar cheese and savory sausage throughout. Letting it rest for a few minutes makes slicing cleaner and allows flavors to settle. If the casserole seems too loose, a short resting period helps it firm up slightly. Serving immediately when it is piping hot can make the cheese stringy and hard to plate neatly, so aim for warm rather than scalding hot.

Notes

  • Cool fillings first, always let the cooked sausage and vegetable mix cool slightly before adding to the bread to avoid steam driven sogginess.
  • Use day old bread, slightly stale crusty Italian bread soaks up custard well and maintains some structure instead of collapsing into mush.
  • Watch the pan when browning, avoid overcrowding the skillet so the mushrooms and peppers brown rather than steam, which concentrates flavor.
  • Divide the salt, seasoning at two stages prevents over or under salting, especially because the cheddar cheese and sausage add saltiness.
  • Rest before serving, allow the strata to sit five to ten minutes after baking to firm up for cleaner slices and more cohesive texture.
Keyword cheddar sausage strata, Christmas brunch recipe, holiday breakfast casserole, make ahead strata