12 Breakfast Casseroles for Holiday Mornings

Sleep in while breakfast bakes itself. These make-ahead breakfast casseroles are built for slow holiday mornings: assemble the night before, pop in the oven, and feed a crowd with zero morning stress.

Below you’ll find 12 reader-favorite recipes, each with a photo, ingredients, and step-by-step instructions. Save your favorites and enjoy!

1. Overnight Sausage Egg Casserole

The classic make-ahead holiday breakfast with sausage, egg, and cheddar.

Ingredients

• 1 lb breakfast sausage
• 8 eggs
• 2 cups milk
• 6 cups cubed French bread
• 2 cups shredded cheddar
• 1 bell pepper, diced
• 1/2 tsp salt
• 1/2 tsp black pepper

Instructions

1. Brown the sausage in a skillet, breaking into crumbles.
2. Whisk the eggs, milk, salt, and pepper.
3. Layer the bread cubes, sausage, bell pepper, and cheddar in a greased 9×13 dish.
4. Pour the egg mixture evenly over the top.
5. Cover and refrigerate overnight.
6. Bake at 350°F for 45 to 50 minutes until puffed and golden.

2. Bacon Swiss Breakfast Bake

Smoky bacon and nutty Swiss in a custardy sourdough bake.

Ingredients

• 1 lb bacon, cooked and crumbled
• 8 eggs
• 2 cups milk
• 6 cups cubed sourdough
• 2 cups shredded Swiss
• 1 cup sliced mushrooms
• 1/2 tsp salt
• 2 tbsp chopped chives

Instructions

1. Whisk the eggs, milk, and salt.
2. Layer the sourdough, bacon, mushrooms, and Swiss in a greased dish.
3. Pour over the egg mixture.
4. Cover and chill at least 4 hours or overnight.
5. Bake at 350°F for 45 minutes until set.
6. Rest 10 minutes; top with chives.

3. Ham and Hash Brown Casserole

Crispy hash browns, ham, and cheddar baked into a hearty morning casserole.

Ingredients

• 6 cups frozen hash browns, thawed
• 8 eggs
• 1 1/2 cups milk
• 2 cups shredded cheddar
• 1 cup diced ham
• 1/2 cup diced onion
• 1 tsp salt
• 1/2 tsp paprika

Instructions

1. Preheat the oven to 375°F and grease a 9×13 dish.
2. Press the hash browns into the bottom of the dish.
3. Whisk the eggs, milk, salt, and paprika.
4. Stir in the ham, onion, and half the cheddar.
5. Pour over the hash browns and top with remaining cheese.
6. Bake 40 to 45 minutes until golden and set.

4. Overnight Berry French Toast Casserole

Custardy French toast bake studded with jammy berries and maple.

Ingredients

• 1 loaf French bread, cubed
• 8 eggs
• 2 1/2 cups milk
• 1/3 cup maple syrup
• 2 tsp cinnamon
• 1 tsp vanilla
• 2 cups mixed berries
• Powdered sugar, for dusting

Instructions

1. Whisk the eggs, milk, maple syrup, cinnamon, and vanilla.
2. Layer the bread cubes and berries in a greased 9×13 dish.
3. Pour the custard over and press to soak.
4. Cover and refrigerate overnight.
5. Bake at 350°F for 45 to 50 minutes until puffed.
6. Dust with powdered sugar and serve warm.

5. Ham and Gruyere Croissant Bake

Buttery croissants, ham, and Gruyere in an elegant brunch bake.

Ingredients

• 6 croissants, torn
• 8 eggs
• 2 cups half-and-half
• 1 1/2 cups shredded Gruyere
• 1 cup diced ham
• 1 tbsp Dijon mustard
• 1/2 tsp salt
• 1 tbsp chopped chives

Instructions

1. Whisk the eggs, half-and-half, Dijon, and salt.
2. Layer the croissant pieces, ham, and Gruyere in a greased dish.
3. Pour over the custard.
4. Rest 30 minutes (or refrigerate overnight).
5. Bake at 350°F for 40 minutes until golden and set.
6. Garnish with chives.

6. Baked Apple Cinnamon Oatmeal

Warm baked oatmeal with caramelized apples and cinnamon.

Ingredients

• 2 cups old-fashioned oats
• 1/2 cup brown sugar
• 1 tsp baking powder
• 1 tsp cinnamon
• 2 eggs
• 2 cups milk
• 1/4 cup melted butter
• 2 cups diced apples

Instructions

1. Preheat the oven to 375°F and grease an 8×8 dish.
2. Mix the oats, brown sugar, baking powder, and cinnamon.
3. Whisk the eggs, milk, and melted butter.
4. Combine wet and dry; fold in the apples.
5. Pour into the dish.
6. Bake 35 to 40 minutes until golden and set.

7. Chorizo Breakfast Casserole

Spicy chorizo and green chiles wake up this cheesy egg bake.

Ingredients

• 1 lb chorizo
• 8 eggs
• 2 cups milk
• 6 cups cubed bread
• 2 cups shredded Monterey Jack
• 1 can (4 oz) diced green chiles
• 1/2 tsp salt
• Salsa, for serving

Instructions

1. Brown the chorizo in a skillet; drain excess fat.
2. Whisk the eggs, milk, and salt.
3. Layer the bread, chorizo, green chiles, and Monterey Jack in a greased dish.
4. Pour over the egg mixture.
5. Refrigerate overnight if desired.
6. Bake at 350°F for 45 minutes; serve with salsa.

8. Tater Tot Breakfast Casserole

Crispy tater tot crust over a savory sausage and egg filling.

Ingredients

• 1 bag (30 oz) frozen tater tots
• 8 eggs
• 1 1/2 cups milk
• 2 cups shredded cheddar
• 1/2 lb breakfast sausage, cooked
• 1/2 cup diced bell pepper
• 1 tsp salt
• 1/2 tsp garlic powder

Instructions

1. Preheat the oven to 375°F and grease a 9×13 dish.
2. Whisk the eggs, milk, salt, and garlic powder.
3. Stir in the sausage, bell pepper, and half the cheddar.
4. Pour into the dish and arrange tater tots on top.
5. Bake 40 minutes.
6. Top with remaining cheddar and bake 5 minutes more.

9. Peach Pecan French Toast Bake

Caramelized peaches and pecans over custardy brioche.

Ingredients

• 6 cups cubed brioche
• 8 eggs
• 2 cups milk
• 1/2 cup brown sugar
• 2 tsp cinnamon
• 1 tsp vanilla
• 2 cups sliced peaches
• 1/2 cup chopped pecans

Instructions

1. Whisk the eggs, milk, brown sugar, cinnamon, and vanilla.
2. Layer the brioche and peaches in a greased 9×13 dish.
3. Pour over the custard and press to soak.
4. Top with pecans.
5. Cover and refrigerate overnight.
6. Bake at 350°F for 45 to 50 minutes until golden.

10. Spinach Feta Quinoa Breakfast Bake

A protein-packed Mediterranean bake with spinach, feta, and quinoa.

Ingredients

• 2 cups cooked quinoa
• 8 eggs
• 1 1/2 cups milk
• 2 cups fresh spinach
• 1 cup crumbled feta
• 1/2 cup sun-dried tomatoes
• 1/2 tsp salt
• 1/4 tsp red pepper flakes

Instructions

1. Preheat the oven to 375°F and grease a 9×13 dish.
2. Whisk the eggs, milk, salt, and red pepper flakes.
3. Stir in the quinoa, spinach, feta, and sun-dried tomatoes.
4. Pour into the dish.
5. Bake 35 to 40 minutes until set in the center.
6. Rest 10 minutes before slicing.

11. Italian Sausage Breakfast Strata

Pizza-inspired strata with sausage, mozzarella, and marinara.

Ingredients

• 1 lb Italian sausage
• 8 eggs
• 2 cups milk
• 6 cups cubed Italian bread
• 2 cups shredded mozzarella
• 1 cup marinara sauce
• 1 tsp Italian seasoning
• Fresh basil, for serving

Instructions

1. Brown the Italian sausage; drain.
2. Whisk the eggs, milk, and Italian seasoning.
3. Layer the bread, sausage, and mozzarella in a greased dish.
4. Pour over the egg mixture and dollop with marinara.
5. Refrigerate overnight.
6. Bake at 350°F for 45 minutes; top with basil.

12. Sweet Potato Breakfast Casserole

Shredded sweet potato crust with smoky pepper Jack and eggs.

Ingredients

• 4 cups shredded sweet potatoes
• 8 eggs
• 1 1/2 cups milk
• 1 cup shredded pepper Jack
• 1/2 cup diced onion
• 1 tsp smoked paprika
• 1 tsp salt
• 2 tbsp olive oil

Instructions

1. Preheat the oven to 375°F.
2. Toss the shredded sweet potato with olive oil, salt, and paprika.
3. Press into a greased 9×13 dish as a crust; bake 15 minutes.
4. Whisk the eggs and milk; stir in the onion and pepper Jack.
5. Pour over the crust.
6. Bake 30 to 35 minutes until set.