Overnight Eggs Benedict Casserole — All the Flavor, None of the Morning Stress

Let me tell you about the problem with classic eggs benedict. It is one of the best breakfast dishes ever conceived — toasted English muffins, Canadian bacon, perfectly poached eggs, hollandaise sauce dripping down the sides. When it is done right, it is genuinely transcendent.

The problem is doing it right for more than two people at the same time, which requires you to be at the stove managing a swirling pot of simmering water, poaching eggs one or two at a time while the first ones get cold and the hollandaise breaks and your guests are already on their second cup of coffee and starting to wonder if they should have just suggested brunch at a restaurant.

I love eggs benedict too much to let it stay in the restaurants-only category, so I started working backward from the flavors I love and forward toward something that a normal person could actually make for a group without losing their mind.

This casserole is the result of that process and it is, if I am being completely honest with myself, better than the original in some important ways.

The English muffins soak overnight in an egg and cream custard that turns them rich and custardy from the inside out. The Canadian bacon layers through the casserole and gets slightly caramelized at the edges during baking.

And the blender hollandaise — which takes five minutes and is virtually foolproof — goes over the top in that golden, glossy stream that tells everyone at the table exactly what they are about to eat. This is the brunch recipe that gets requested every single time I make it, and once you make it you will understand completely why.

Why You’ll Love This Recipe

• Almost everything happens the night before. The assembly takes about 20 minutes the night before your brunch. The morning of, you pull the casserole from the fridge, let it come to room temperature while the oven heats, and bake. The only morning task beyond that is the five-minute blender hollandaise. This is the recipe that lets you actually be present at your own brunch instead of trapped in the kitchen.
• It feeds a crowd without any additional effort. The same recipe that serves two at a diner counter serves eight to ten people at your table. There is no scaling complexity, no timing multiple pans, no keeping things warm while other things cook. One casserole dish, one oven, one golden hollandaise — done.
• All the classic eggs benedict flavors are genuinely present. This is not a casserole that merely reminds you of eggs benedict. The combination of the custard-soaked English muffin, the Canadian bacon, and the blender hollandaise delivers the same flavor profile as the original in every bite. People who love classic eggs benedict love this casserole immediately and completely.
• The blender hollandaise is virtually foolproof. Traditional hollandaise is a classic sauce that also has a well-earned reputation for breaking without warning. The blender version in this recipe is stable, consistently emulsified, and takes five minutes. It tastes exactly like the real thing because it uses exactly the same ingredients — just assembled differently.
• The presentation is genuinely stunning. A golden baked casserole with Canadian bacon visible throughout, topped with a glossy hollandaise draping down the sides and fresh chives scattered across the top — it is the kind of dish that makes people stop talking when it hits the table. The visual payoff is enormous for the amount of active effort involved.

Ingredients with Key Notes

For the Casserole:

• 6 English muffins, split and cut into rough one inch pieces
• 8 ounces Canadian bacon, cut into bite-sized pieces
• 8 large eggs
• 2 cups whole milk
• 1/2 cup heavy cream
• 1 teaspoon onion powder
• 1/2 teaspoon garlic powder
• 1/2 teaspoon dry mustard powder
• Salt and black pepper to taste
• 2 tablespoons butter for greasing the baking dish
• Fresh chives for garnish

For the Blender Hollandaise:

• 4 large egg yolks
• 1 tablespoon fresh lemon juice
• 1/2 teaspoon dry mustard
• Pinch of cayenne pepper
• Pinch of salt
• 1/2 cup unsalted butter (1 stick), melted and very hot

Key Notes:

English Muffins — English muffins are the non-negotiable bread choice for this recipe. Their nooks and crannies absorb the egg custard beautifully during the overnight soak, which is exactly what you want — a bread that soaks without disintegrating and that has enough structure to hold up as a casserole base. Split and roughly torn English muffins also give you irregular surfaces that get golden and slightly crispy on top during baking while remaining custardy underneath. Day-old English muffins that have had a chance to dry out slightly absorb the custard even more effectively than fresh ones.

Canadian Bacon — Canadian bacon is the closest thing to the ham used in a classic eggs benedict and gives the casserole that authentic flavor profile. It is leaner than regular bacon and has a slightly different texture that works beautifully in the casserole. Cut it into bite-sized pieces so it distributes evenly throughout the layers. Regular ham is a very close substitute. Regular bacon, cooked and crumbled, takes the flavor in a smokier direction that some people actually prefer — both versions work.

Egg Custard Ratio — Eight eggs to two cups of whole milk and half a cup of heavy cream is the ratio that gives you a custard rich enough to create that silky, slightly custardy interior texture in the finished casserole without being so heavy that it feels dense. The heavy cream is what separates a good breakfast casserole from a great one — do not substitute with more milk. The fat content is what gives the custard its richness and prevents it from becoming watery as it bakes.

Dry Mustard Powder — Half a teaspoon of dry mustard in the custard adds a subtle sharpness that echoes the mustard note in a classic hollandaise and ties the casserole and the sauce together beautifully. It is a small detail that makes a noticeable difference in how complete the whole dish tastes. Do not substitute with prepared mustard — the liquid will throw off the custard ratio.

Blender Hollandaise — Hot Butter is Critical — The key to a successful blender hollandaise is making sure the butter is genuinely hot when you add it — not just melted, but actively hot and almost bubbling. The heat from the butter is what gently cooks the egg yolks as it is added, creating a stable, properly emulsified sauce. Butter that is only warm will not properly emulsify and you will end up with a thin, broken sauce rather than a thick, glossy one.

Lemon Juice — Fresh lemon juice rather than bottled is strongly recommended for the hollandaise. The bright, clean acidity of fresh lemon juice is one of the defining characteristics of a good hollandaise and the difference between fresh and bottled is clearly detectable in a sauce where lemon is a primary flavor component.

Step-by-Step Instructions

Step 1 — Prep and Assemble the Casserole

Generously butter a 9×13 inch baking dish on the bottom and all the way up the sides. Arrange half of the torn English muffin pieces in an even layer across the bottom of the dish. Scatter half of the Canadian bacon pieces over the English muffins. Add the remaining English muffin pieces on top, followed by the rest of the Canadian bacon. The layering ensures that every serving gets both muffin and bacon throughout rather than a muffin layer and a bacon layer that separate when cut.

Step 2 — Make and Pour the Custard

In a large bowl, whisk together the eggs, whole milk, heavy cream, onion powder, garlic powder, dry mustard powder, salt, and black pepper until fully combined and uniform. The custard should be smooth and well-seasoned — taste a small amount and adjust the salt before pouring.

Pour the custard evenly over the layered English muffins and Canadian bacon in the baking dish, making sure to pour it over the entire surface so every piece of bread gets soaked. Use a spatula or the back of a spoon to gently press the top layer of English muffin pieces down into the custard so they begin to absorb it.

Step 3 — Overnight Refrigeration

Cover the baking dish tightly with plastic wrap and refrigerate for a minimum of 8 hours, ideally overnight. During this time the English muffins absorb the custard completely, becoming richly soaked all the way through. This overnight soak is what creates the custardy, almost bread pudding-like interior texture that makes this casserole so good and so distinctly different from a casserole assembled and baked the same day.

If you press the bread down into the custard once or twice during the first hour before fully refrigerating, you will get even more thorough absorption.

Step 4 — Bake the Casserole

Remove the casserole from the refrigerator 30 minutes before you plan to bake it to allow it to come slightly toward room temperature. A very cold casserole going directly into a hot oven bakes unevenly — the outside sets before the center has warmed through.

Preheat your oven to 375 degrees F (190 degrees C). Remove the plastic wrap and cover the baking dish tightly with aluminum foil.

Bake covered for 30 minutes, then remove the foil and bake for an additional 15-20 minutes until the top is golden brown, slightly puffed, and a knife inserted into the center comes out clean with no liquid custard running from it. The top English muffin pieces should be golden and slightly crispy at the edges, the interior should be set and custardy.

Remove from the oven and let rest for 5-10 minutes before cutting. This rest period allows the casserole to set completely and makes it significantly easier to cut clean squares that hold their shape on the plate.

Step 5 — Make the Blender Hollandaise

Make the hollandaise while the casserole is in its final 15-20 minutes of uncovered baking so it is ready when the casserole comes out.

Add the egg yolks, fresh lemon juice, dry mustard, cayenne, and salt to a blender. Blend on medium speed for about 30 seconds until the yolks are slightly thickened and pale. With the blender still running on medium speed, very slowly pour the hot melted butter in a thin, steady stream through the hole in the blender lid. The key is slow — pouring too quickly does not give the emulsification time to form and you will end up with a broken sauce. Pour over the course of about 60-90 seconds in a thin continuous stream.

Once all the butter is incorporated, blend for another 10-15 seconds. The hollandaise should be thick, glossy, and pale golden. Taste and adjust — more lemon juice for brightness, more cayenne for heat, more salt if needed. Transfer to a small pitcher or bowl. If the sauce is too thick, whisk in a few drops of warm water to thin it to your preferred consistency.

Use the hollandaise within 30-45 minutes of making it — it does not hold well for extended periods and is best served immediately.

Step 6 — Serve

Cut the casserole into squares and lift each serving onto individual plates using a wide spatula. Pour a generous amount of hollandaise over each serving, letting it drape down the sides. Scatter fresh thinly sliced chives generously over the top. Add a final crack of black pepper and serve immediately.

Serving Suggestions

This casserole is a complete and fully satisfying brunch centerpiece on its own — the English muffin, Canadian bacon, egg custard, and hollandaise together cover every component of a substantial breakfast. That said, a few simple additions round out a full brunch spread beautifully.

Fresh fruit is the perfect counterbalance to the richness of the casserole and hollandaise. A large bowl of mixed berries, sliced melon, and halved grapes on the table gives everyone a fresh, bright option alongside the richness of the casserole and requires zero morning effort beyond washing and slicing.

Mimosas are the ideal drink pairing and frankly feel almost mandatory at a brunch where this casserole is the centerpiece. Set out a pitcher of fresh orange juice and a bottle of cold sparkling wine and let people pour their own — it is a relaxed, hospitable format that works beautifully for any size gathering.

A simple green salad with a light lemon vinaigrette served alongside adds a fresh, slightly acidic element that cuts through the richness of the hollandaise and makes the meal feel balanced and complete. Keep the dressing light and bright — this is not the moment for a heavy, creamy dressing.

For a larger brunch spread, serve alongside a platter of smoked salmon with cream cheese and capers, a bowl of fresh fruit, and a basket of pastries. The casserole handles the hot, savory, protein-rich component of the meal and everything else is simple, no-cook, and can be set out before the casserole comes out of the oven.

Storage Tips

Leftover Casserole — Cover the cooled casserole tightly with plastic wrap or transfer individual portions to airtight containers. Refrigerate for up to 3 days. The casserole reheats well and the flavors actually deepen slightly overnight, making leftovers genuinely enjoyable rather than just acceptable.

Reheating — Reheat individual portions in a 350 degree F oven for 12-15 minutes until heated through. Cover loosely with foil to prevent the top from over-browning. The microwave works in 60-90 second intervals but the texture of the English muffin softens noticeably. The oven method is always worth the extra few minutes for a better result.

Hollandaise — Hollandaise does not store well and is best made fresh each time. If you have leftover sauce, press plastic wrap directly onto the surface of the sauce to prevent a skin from forming, and refrigerate for up to 24 hours. Reheat very gently by whisking it in a small bowl set over warm — not hot — water, stirring constantly. The sauce can break during reheating if the heat is too high — keep it gentle and patient.

Making the Casserole Further Ahead — The assembled uncooked casserole can be refrigerated for up to 24 hours before baking. Beyond 24 hours, the English muffins can become overly saturated and begin to break down in texture. Assemble the night before for optimal results — 8-12 hours is the sweet spot.

Freezing — The baked casserole freezes reasonably well without the hollandaise. Cool completely, cut into individual portions, wrap each tightly in plastic wrap and then foil, and freeze for up to 1 month. Thaw overnight in the fridge and reheat as above. Make the hollandaise fresh when serving.

Closing

This is the brunch recipe that changed how I think about hosting. Not because it is the most technically impressive dish I have ever made, but because of what it represents — the idea that feeding people well does not have to mean spending the whole morning stressed in the kitchen while everyone else is having a good time.

You do the work the night before. You sleep. You wake up, put the casserole in the oven, make a blender hollandaise in five minutes, and sit down at your own table like a person who has it together. The casserole comes out golden and stunning and smelling like a very good Sunday morning decision, and the hollandaise goes over the top in that glossy golden stream, and everyone at the table is immediately and completely happy.

That is what this recipe delivers. Make it the next time you have people over for brunch and enjoy being the host who actually gets to enjoy the party.

Drop a comment below and tell me what occasion you made it for. I want to hear about the holidays, the birthdays, the just-because Sundays, all of it.

Happy cooking.

— Kip