Can I use a different kind of bread?

Absolutely! While classic white bread gives the fluffiest results, any sturdy bread like sourdough, French, or even leftover buns will work. Just avoid overly dense or grainy varieties, as they can make the casserole heavy.

Do I have to let it sit overnight?

Yes, letting it rest is key. The bread needs time to fully soak up the egg mixture, or else you risk a dry or uneven casserole. If you’re in a real hurry, give it at least 3-4 hours in the fridge, but overnight is ideal.

What if I don’t have dry mustard?

If you’re out, a little Dijon mustard can be whisked into the egg mixture for a similar tang. Don’t skip it entirely—it really boosts the savory flavor.

Can this casserole be made dairy-free or gluten-free?

Certainly! Opt for your favorite unsweetened non-dairy milk and a good melting dairy-free cheese. Use gluten-free bread, and triple check your ham for any hidden additives or gluten.

Ham and Cheese Breakfast Casserole Recipe

This Ham and Cheese Breakfast Casserole is the ultimate answer to “What can I make for a crowd, and not be stuck in the kitchen all morning?” The layers of buttery bread, savory ham, and gooey cheddar combine with a fluffy, seasoned egg custard to create an irresistibly comforting start to any day. Everything gets assembled the night before, so you can wake up, pop it in the oven, and relax with your coffee while it bakes to perfection. Whether it’s a busy weekday morning, a lazy weekend, or a special holiday brunch, this easy casserole brings together classic flavors with minimal fuss.

Why You’ll Love This Recipe

Effortless Prep: The most hands-on part is layering bread, ham, and cheese—no fancy techniques, no endless chopping. Let the fridge do the work overnight.
Hearty & Satisfying: Each slice is packed with soft bread, tender ham, and that irresistible golden blanket of melted cheddar. A little parsley and a hint of mustard transform simple ingredients into something special.
Make-Ahead Magic: Prepare it entirely ahead of time, then just bake it in the morning. No scrambling eggs, no flipping toast—breakfast is ready when you are.
Perfect for a Crowd: This one-pan wonder feeds a hungry group, making it ideal for family gatherings, potlucks, or when overnight guests appear.

Ingredients You’ll Need

Butter: For greasing the pan, ensuring a golden, non-stick finish and adding a subtle richness.
White Bread: The base and topping; look for a standard pre-sliced loaf. The bread soaks up the egg mixture, becoming custardy yet slightly crisp on top.
Ham: Choose a no-water-added ham, finely ground in a food processor or by your butcher. It brings a deep, meaty flavor and a bit of texture in every bite.
Cheddar Cheese: Medium cheddar provides the perfect balance—sharp but creamy, and melts beautifully for that golden, cheesy crown.
Eggs: These create the custardy structure and bind all the layers together.
Milk: Combines with the eggs for a soft, tender casserole.
Dry Mustard: Adds gentle warmth and elevates the savory notes—don’t skip this ingredient!
Fresh Parsley: For a pop of color and fresh, herby brightness.

Tip: Use ingredients you love. If you prefer a different bread or cheese, go for it—the casserole is very forgiving!

Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

Eager to put your own twist on this classic? Here are some great ways to make it your own:

Meat Swap: Try cooked breakfast sausage, bacon, or turkey ham for a different flavor profile.
Cheese Choices: Pepper Jack for a little kick, Swiss for a nutty tang, or Monterey Jack for a milder melt.
Add Veggies: Toss in sautéed spinach, peppers, mushrooms, or even a handful of chopped tomatoes before pouring in the egg mixture.
Bread Alternatives: Use leftover croissants, sourdough, or a rustic country loaf for a fancier texture.

Don’t be afraid to get creative—this casserole is a blank canvas for your breakfast favorites!

How to Make Ham and Cheese Breakfast Casserole

Step 1: Prepare the Pan and Base

Spread a good layer of softened butter over the bottom and sides of a 9×13-inch baking dish. Tear half of the white bread into bite-sized pieces and fit them snugly in the bottom, like puzzle pieces, but no need to pack them down.

Step 2: Layer the Good Stuff

Evenly distribute the finely ground ham over the bread layer, then sprinkle with all that glorious cheddar cheese. Tear the remaining bread and arrange over the top, covering the cheese and ham.

Step 3: Whisk and Season the Custard

In a large measuring cup or bowl, whisk together the eggs and milk until completely smooth. In a separate small bowl, mix the dry mustard with a spoonful of the egg-milk mixture until the mustard dissolves, then add it back in. Toss in the chopped parsley and give it all a final whisk.

Step 4: Pour and Soak

Slowly pour the egg mixture evenly over the top, making sure to cover all the bread and reach the edges. Gently press down with a fork if needed to help the custard soak in.

Step 5: Chill Overnight

Cover tightly with non-stick foil and refrigerate overnight. This step is not optional—the bread needs time to drink up that custard, giving the casserole its signature soft, delicious texture.

Step 6: Bake to Perfection

In the morning, remove the casserole from the refrigerator. Bake uncovered at 325°F for 50-60 minutes. Check at 50 minutes—if the top is browning too quickly, loosely tent with foil for the last bit of baking. The casserole should be golden and bubbling, and the eggs set.

Step 7: Rest and Serve

Let the casserole stand for 5-10 minutes before slicing. This allows everything to firm up slightly for easy serving.

Pro Tips for Making the Recipe

Crust Level: Tear your bread into even chunks—too small and the casserole can get too dense, too large and it might be uneven.
Good Cheese Matters: Don’t skimp on the cheese! Freshly grated melts much better than pre-shredded.
Edge Attention: Pour the custard slowly and check that each corner gets soaked for a uniform bake.
Color Control: Keep an eye on browning in the last 10 minutes. Tent with foil if it’s getting too dark before the eggs are fully set.

How to Serve

This casserole shines just as it is, hot from the oven, but don’t hesitate to jazz it up!

With Fresh Herbs: Scatter on extra parsley or even chives for a burst of color.
Salsa or Hot Sauce: A little drizzle on each serving adds zing.
Fruit Salad: The rich, savory casserole pairs beautifully with something crisp and sweet.
Simple Greens: A lightly dressed mixed greens salad balances the meal for brunch.

If you’re hosting a big breakfast or brunch, serve alongside roasted potatoes, bacon, or a bright fruit platter for a complete spread.

Make Ahead and Storage

Storing Leftovers

Cool any leftovers, then cover the casserole dish or portion slices into airtight containers. Store in the refrigerator for up to 3 days.

Freezing

This casserole freezes like a dream! Slice into individual portions, wrap tightly, and freeze up to 2 months.

Reheating

Single servings can be microwaved straight from the refrigerator. For best results, reheat larger portions in the oven, covered with foil, at 325°F until warmed through (about 15-20 minutes).

Tip: If reheating from frozen, thaw overnight in the fridge first for even heating.

FAQs

Can I use a different kind of bread?

Absolutely! While classic white bread gives the fluffiest results, any sturdy bread like sourdough, French, or even leftover buns will work. Just avoid overly dense or grainy varieties, as they can make the casserole heavy.
Do I have to let it sit overnight?

Yes, letting it rest is key. The bread needs time to fully soak up the egg mixture, or else you risk a dry or uneven casserole. If you’re in a real hurry, give it at least 3-4 hours in the fridge, but overnight is ideal.
What if I don’t have dry mustard?

If you’re out, a little Dijon mustard can be whisked into the egg mixture for a similar tang. Don’t skip it entirely—it really boosts the savory flavor.
Can this casserole be made dairy-free or gluten-free?

Certainly! Opt for your favorite unsweetened non-dairy milk and a good melting dairy-free cheese. Use gluten-free bread, and triple check your ham for any hidden additives or gluten.

Final Thoughts

There’s just something magical about a warm slice of Ham and Cheese Breakfast Casserole on a busy morning or holiday gathering. It’s hearty, welcoming, and astonishingly easy to pull together. This is the kind of recipe you’ll revisit again and again—straightforward, flexible, and always crowd-pleasing. Give it a try and enjoy how effortless and delicious breakfast can really be!