Bacon breakfast casserole is the kind of dependable morning bake that makes a busy table feel organized. This bacon breakfast casserole combines crisp bacon, tender bread, sharp cheddar, and a softly seasoned egg custard in one dish. You can assemble the layers before guests arrive, bake until the center is set, and serve warm slices with fruit, coffee, or a simple green salad. The result is savory, filling, and easy to portion for a family breakfast or weekend brunch.
What this bacon breakfast casserole is
This is a baked egg casserole built like a savory strata. Day-old bread gives the custard something to cling to, while bacon adds smoky salt and cheddar melts through the layers. The finished center should be tender rather than wet, with a lightly crisp top and browned edges.
The recipe yields eight servings and takes about an hour from start to finish. The short rest before baking matters because it lets the bread absorb the egg mixture evenly instead of leaving a dry top and loose liquid underneath.
Why this breakfast casserole works
Bacon is cooked first so its rendered flavor seasons the dish and its texture stays pleasantly crisp. Milk keeps the eggs tender, Dijon adds gentle savory depth, and cheddar provides enough richness without making the casserole heavy. Using bread cubes instead of a solid slice layer also creates small pockets that bake evenly.
The casserole is forgiving about timing. If it sits for ten minutes before baking, the bread hydrates; if it rests for five minutes after baking, the custard finishes setting and slices cleanly. Look for a golden surface and a center that barely moves when the dish is nudged.
How to make bacon breakfast casserole
Start with a greased 9-by-13-inch baking dish and preheat the oven to 350°F. Cook the bacon separately, then build the casserole in layers. Whisk the eggs, milk, Dijon mustard, salt, and pepper thoroughly so the seasoning reaches every cube of bread.
Ingredients
- 8 slices bacon, cooked crisp and crumbled
- 8 large eggs, beaten
- 2 cups whole milk
- 1 teaspoon Dijon mustard
- 1/2 teaspoon kosher salt
- 1/4 teaspoon black pepper
- 6 cups day-old cubed bread
- 1 1/2 cups shredded cheddar cheese, divided
- 2 tablespoons chopped chives, optional

Assemble the layers
Heat the oven to 350°F and grease a 9-by-13-inch baking dish. Cook the bacon in a skillet until crisp, drain it, and crumble it. Spread the bread cubes in the prepared dish and scatter over the bacon and 1 cup of the cheddar.
Whisk the eggs, milk, Dijon mustard, salt, and pepper until smooth, then pour evenly over the bread. Press the bread down gently so it absorbs the custard. Top with the remaining cheddar and rest for 10 minutes.

Bake until the center is set
Bake for 40 to 45 minutes, until the center is set, the top is golden, and a knife inserted near the center comes out clean. Cool for 5 minutes, scatter with chives if using, slice, and serve warm.
Serving ideas
Serve each square with fresh berries, orange segments, or sliced melon for contrast. For a larger brunch, add roasted potatoes and a crisp green salad. A spoonful of salsa or hot sauce works well at the table, but keep the casserole itself mild so it suits children and mixed preferences.
For a concrete use case, assemble the dish after dinner, cover it, and refrigerate it overnight. In the morning, let it stand briefly while the oven heats, then bake until the center is set. This makes it practical for a holiday breakfast when the cook should be assembling coffee rather than measuring ingredients.
Tips for the best result
Use bread that is slightly stale, not fresh and squishy. Fresh bread can collapse into a dense layer, while day-old cubes retain enough structure to absorb the custard. Cut the cubes evenly so one section does not dry out while another remains wet.
Do not judge doneness by the cheese alone. The surface can brown before the egg mixture has set. Test near the middle, where the casserole is thickest, and give it a few extra minutes if the knife shows liquid egg.
Optional variation
Optional variation: replace up to half the cheddar with Monterey Jack and add a handful of chopped spinach. Squeeze excess moisture from cooked spinach first. This changes the flavor and color while keeping the same bread, egg, and bacon method.
Storage and reheating
Cool leftovers promptly, cover the baking dish, and refrigerate for up to three days. Reheat individual portions in the microwave until hot, or warm several slices in a covered oven-safe dish at 325°F. Uncover for the final few minutes if you want the cheese to regain a little surface texture.
For make-ahead preparation, assemble the casserole and refrigerate it overnight before baking. If the chilled dish is very cold, allow a few additional minutes in the oven and check the center rather than relying only on the timer.
Can I make bacon breakfast casserole ahead?
Yes. Assemble it the night before, cover it, and refrigerate it. Bake the next morning until the center is set and the top is golden.
How do I know it is done?
The center should barely move when nudged, and a knife inserted near the middle should come out clean rather than coated with liquid egg.
What bread is best?
Day-old sandwich bread, French bread, or sourdough all work. The important detail is cutting it into even cubes and avoiding bread that is already very soft.
FAQs: frequently asked questions

With crisp bacon, melty cheddar, and a tender egg-soaked center, this casserole gives you a warm breakfast that is easy to prep, share, and adapt. Slice it after a short rest, add something fresh on the side, and enjoy a reliable make-ahead dish.

Bacon Breakfast Casserole with Eggs and Cheese
Ingredients
Ingredients
- 8 slices bacon cooked crisp and crumbled
- 8 large eggs beaten
- 2 cups whole milk
- 1 teaspoon Dijon mustard
- 1/2 teaspoon kosher salt
- 1/4 teaspoon black pepper
- 6 cups cubed bread day-old, cut into 1-inch cubes
- 1 1/2 cups shredded cheddar cheese divided
- 2 tablespoons chopped chives
Instructions
Instructions
- Heat the oven to 350°F and grease a 9-by-13-inch baking dish.
- Cook the bacon in a skillet until crisp, drain it, and crumble it.
- Spread the bread cubes in the prepared dish and scatter over the bacon and 1 cup of the cheddar.
- Whisk the eggs, milk, Dijon mustard, salt, and pepper until smooth, then pour evenly over the bread.
- Press the bread down gently so it absorbs the custard. Top with the remaining cheddar and rest for 10 minutes.
- Bake for 40 to 45 minutes, until the center is set, the top is golden, and a knife inserted near the center comes out clean.
- Cool for 5 minutes, scatter with chives if using, slice, and serve warm.
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