christmas brunch casserole recipe for family

A christmas brunch casserole recipe for family is the kind of make-ahead breakfast bake that lets you enjoy the holiday morning instead of standing at the stove. It layers bread, eggs, breakfast sausage, and cheese into one dish that bakes while everyone opens gifts. You get a savory, fluffy center with a golden top and enough portions to feed eight without a second pan.

The structure matters more than the exact add-ins. A soaked bread base holds the custard so it sets evenly, while the sausage and vegetables give each bite a different texture. This version uses mild pork sausage and sharp cheddar, but the method stays the same if you change those later. If you enjoyed this, our courses is worth trying next. Making this christmas brunch casserole recipe for family at home is surprisingly straightforward once you know the key steps.

Why You'll Love These Christmas Brunch Casserole Recipe For Family

• Assemble the night before and bake fresh, so morning prep is under ten minutes.
• One pan feeds eight people, which cuts dish count on a busy holiday.
• Freezes in baked portions, so leftovers cover a quick breakfast later.
• Uses pantry staples plus one protein, with no special equipment needed.

Ingredients You'll Need

• 1 lb ground breakfast sausage (mild pork) – browning it first renders fat and builds the base flavor.
• 8 cups cubed day-old white bread (about 1 inch pieces) – stale bread soaks custard without turning to paste.
• 8 large eggs – the custard that sets the casserole.
• 2 cups whole milk – thins the eggs for a soft, sliceable texture.
• 1 cup shredded sharp cheddar cheese – sharp variety cuts through the richness.
• 1 cup shredded mozzarella cheese – gives a stretchy, browned top layer.
• 1 medium red bell pepper, diced – adds sweetness and color contrast.
• 1 small yellow onion, diced – softens into the custard for mild bite.
• 1 tsp salt – balances the dairy and meat.
• 1/2 tsp black pepper – light heat without masking other flavors.
• 1/2 tsp dry mustard powder – amplifies the cheese note subtly.

Ingredient Substitutions

Ground breakfast sausage: Replace with 1 lb of diced ham or crumbled turkey sausage using the same weight. Ham is already cooked, so skip the browning step and fold it in raw with the vegetables; turkey sausage browns the same way but releases less fat, so add 1 tbsp olive oil to the pan. Expect a slightly less greasy result and a lighter savory note than pork. The christmas brunch casserole recipe for family works well for weeknight cooking when time is limited.

White bread: Use 8 cups of cubed whole grain bread in equal volume for more fiber and a nuttier taste. Whole grain absorbs liquid a bit slower, so let the mixed casserole rest 30 minutes longer before baking if you did not refrigerate overnight. The crumb stays a touch denser and the top browns a shade darker. Storing leftover christmas brunch casserole recipe for family correctly keeps it tasting good for days.

Sharp cheddar cheese: Swap for an equal amount of shredded Gruyère to get a sweeter, nutty profile. Gruyère melts smoother than cheddar and browns faster, so check the top at 25 minutes and tent with foil if needed. The overall flavor reads more delicate and less tangy. For the best results with this christmas brunch casserole recipe for family, read through all the steps before starting.

Whole milk: Use 2 cups of half-and-half for a richer custard with a softer set. Half-and-half has more fat, so the center stays creamier and the bake time extends by about 5 minutes. Cut salt to 3/4 tsp since the dairy tastes fuller.

Step-by-Step Instructions

1. Heat a large skillet over medium heat and cook 1 lb ground breakfast sausage, breaking it apart, until no pink remains and edges are golden and crispy, about 8 minutes. Transfer to a paper towel lined plate.
2. Lower the skillet to medium-low heat and add diced onion and red bell pepper. Cook, stirring, until softened and translucent, about 5 minutes, then remove from heat.
3. Grease a 9x13 inch baking dish. Spread 8 cups cubed bread across the bottom in an even layer, then scatter sausage and cooked vegetables over the top.
4. In a bowl, whisk 8 eggs, 2 cups milk, 1 tsp salt, 1/2 tsp pepper, and 1/2 tsp dry mustard until uniform. Pour evenly over the bread, pressing gently so liquid reaches the corners.
5. Sprinkle 1 cup cheddar and 1 cup mozzarella across the surface. Cover with foil and refrigerate 8 hours or overnight for full soak.
6. Heat oven to 180°C / 350°F. Bake covered 25 minutes, then uncover and bake 20–25 minutes more until the center is just set edges and top is browned.
7. Rest the dish on the counter 10 minutes before slicing so the custard firms for clean squares.

Pro Tips

Dry your bread cubes on a tray for 1 hour if they are fresh, since moist bread makes a soggy bottom layer that will not slice. For a related make-ahead idea, see our high protein casserole options.

Avoid opening the oven during the uncovered stage, because the cold air drops the top temperature and slows browning. The correct oven setup keeps the heat steady for an even rise.

If your family prefers a lighter side, pair the bake with maple roasted carrots for a sweet contrast to the savory custard.

Shred cheese from a block instead of using pre-bagged, because anti-caking starch in bags prevents a smooth melt and dulls the top color.

Common Mistakes to Avoid

Skipping the overnight rest leads to dry pockets of bread, because the custard has not penetrated. Always plan the 8 hours chill so each cube softens fully.

Using hot sausage straight from the pan without draining lets grease pool under the bread and fry it instead of baking. Blot with paper towels before layering.

Cutting too soon after baking causes the eggs to run; the 10 minutes rest is not optional for clean portions.

Serving Suggestions

Slice into eight squares and plate with a small basil pesto drizzle for a herbal lift against the cheese. A bowl of cherry tomatoes on the side adds acidity that cuts the richness. For drinks, a peach lemonade keeps the table festive without alcohol.

Storage and Reheating

Cool leftovers to room temperature within 2 hours, then store in an airtight container up to 4 days in the refrigerator. Reheat single squares in a 175°C / 350°F oven for 12–15 minutes until the center reaches 74°C / 165°F. The baked casserole freezes for up to 2 months wrapped tight; thaw overnight before reheating.

Recipe Variations

Vegetable Only

Omit the sausage and add 2 cups chopped spinach plus 1 cup sliced mushrooms sautéed with the onion. The bake loses the pork fat, so stir 1 tbsp olive oil into the custard to keep the crumb tender. Expect a lighter, garden-style square with the same set time.

Spicy Version

Use hot breakfast sausage and add 1/2 tsp cayenne to the egg mix for a clear heat line. Keep the cheddar sharp to balance the burn. The top browns at the same rate but the flavor reads noticeably warmer.

Gluten Free Option

Replace the white bread with 8 cups cubed gluten-free loaf of similar density. Gluten-free bread softens faster, so reduce the chill time to 6 hours to avoid mush. The slice holds together with a slightly more fragile edge.

Smoked Cheese Twist

Swap mozzarella for 1 cup shredded smoked gouda to add a campfire note to the top. Gouda browns quicker, so watch at 20 minutes uncovered. The center stays identical but the aroma shifts bold.