This Smoked Salmon Breakfast Casserole is loaded with smoked salmon, eggs, fresh veggies, and cheese all layered on a bed of sweet brioche bread. Pure heaven on a plate!

Mention smoked salmon and it usually conjures up thoughts of an elegant meal, don’t you think? Well, I am happy to tell you that this smoked salmon casserole definitely delivers elegance yet is simple to prepare.
Perfect for a weekend brunch, weekday lunch, or even a light dinner, this salmon casserole is sure to taste great any time you eat it.
Why you’ll love this salmon casserole
✓ Casseroles are fairly forgiving – modify it to your liking (see substitutions)
✓ Make ahead friendly – whether you’re hosting brunch or meal prepping for the week, it reheats beautifully and saves time during busy mornings.
✓ Packed with protein and satisfying – thanks to brain-boosting omega-3 rich salmon and protein-packed eggs, this veggie-packed casserole keeps you full and nourished.
✓ Elevated and easy – fancy enough for a brunch with friend and easy enough for everyday eating.

Ingredients and substitutions
Making this salmon egg bake is really easy. Some of the ingredients can be replaced for others of your choice. Read through for ideas and suggestions.
- Eggs – Protein-packed eggs help bake this dish into a hearty casserole. I like to use pasture raised cage-free eggs.
- Milk – Any kind of milk will work in this casserole. The higher the fat content, the richer the casserole will be. You can also substitute plant-based milk.
- Mozzarella cheese – What would a casserole be without cheese? I used mozzarella but any kind of cheese is good. Try cheddar, Swiss, gouda, goat cheese or smoked cheese for a different flavor. If you decide to swap the smoked salmon for something else consider using smoked cheese.
- Cream cheese – Full-fat cream cheese will make this casserole nice and rich but low fat will also work. You can also use flavored cream cheese like chives or salmon.
- Dijon – Just a touch of Dijon helps to balance out the flavors of this casserole.
- Black pepper- Freshly ground black pepper enhances this casserole’s flavors.
- Smoked salmon – Smoked salmon makes this casserole taste nice and decadent but you can use leftover baked or broiled salmon, canned salmon, or switch it up and use ham or sausage instead. Or leave out the fish and meat altogether for a vegetarian casserole.
- Fresh vegetables – I used a red onion, kale, and cherry tomatoes. You can easily use a white onion or shallots, spinach, and a diced Roma tomato or whatever else you have on hand.
- Capers – Capers are optional but they add a nice salty flavor to the casserole so do go ahead and use them even if you aren’t quite sure. Trust me on this one!
- Brioche bread – This soft and slightly sweet bread is great for casseroles but you can substitute an egg bread or any other kind of bread you happen to have on hand. Brioche bread does have a unique flavor that you won’t get by using other types of bread.

How To Make Smoked Salmon Casserole
- Start by whisking the eggs in a large bowl. Stir in the milk, shredded cheese, cream cheese, and Dijon mustard, and season with fresh ground black pepper.
- In a separate bowl combine the salmon and the veggies.
- Cube the brioche bread and place it in a single layer on the bottom of a greased casserole dish.
- Start to layer the casserole by pouring half of the egg and cheese mixture over the bread.
- Evenly distribute the salmon and the veggies over the egg and cheese mixture.
- Top with the remaining egg mixture and the extra shredded cheese.
- Bake for 40-45 minutes or until the egg is cooked through.

silvia’s tips
👉🏻 Coat the casserole dish well – give the casserole dish a generous coating of cooking spray or olive oil as bread and eggs tend to stick.
👉🏻 Cut the vegetables small – make sure the veggies are bite-sized so they soften while the casserole bakes.
👉🏻 Add some herbs – Sprinkle the casserole with chopped chives or fresh dill, both of these go well with smoked salmon.
👉🏻 For a heartier casserole – For an even heartier casserole you can add a layer of thinly sliced potatoes or substitute the potatoes for the brioche bread.

Smoked Salmon Breakfast Casserole Recipe
Equipment
Ingredients
- 8 whole cage-free eggs
- 3/4 cup milk
- 1 cup shredded mozzarella cheese divided
- 1/3 cup cream cheese
- 1 tsp dijon mustard
- 1 pinch ground black pepper
- 6 oz smoked salmon (can sub for roasted salmon) flaked
- 1/2 whole red onion diced
- 2 tbsp capers
- 1 cup fresh kale chopped small
- 1/2 cup cherry tomatoes diced
- 1/2 loaf brioche bread cubed
Instructions
- Pre-heat oven to 375F degrees.
- In a large bowl whisk the eggs, add in milk, 1/2 cup cheese, dijon mustard, cream cheese and ground pepper. Whisk to combine. Set aside.
- In a separate bowl add in salmon, onion, capers (if using), kale and cherry tomatoes. Mix to combine. Set aside
- Place a layer of brioche bread on the bottom of a 11×8 casserole. Make sure to cover the entire bottom of casserole with loose cubes of brioche but don't press it down.
- Pour half of the egg mixture on to the brioche.
- Add in all the salmon and veggies. Make sure to distribute evenly.
- Top with remaining egg mixture.
- Fishish with remaining shredded cheese.
- Bake for 40-45 minutes. Check the center to make sure it is cooked through. Cheese should be bubbly but egg cooked all the way.
- Garnish with fresh greens, chives or dill, fresh ground black pepper and serve.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
What to serve salmon casserole with?
Serve this smoked salmon casserole alongside this Tropical Summer Fruit Salad for Sunday brunch, this Roasted Garlic Vegetable Salad for a weekday lunch, or Butternut Squash Arugula Salad for dinner.

Looking for more breakfast casserole options? Try one of these:
Berries ‘N Cream French Toast Casserole
Ham and Cheese Breakfast Casserole















These photos are so gorgeous ๐
Thank you!! ๐
What size baking pan? 5 big eaters so need to make at least a 13×9 pan is ingredients enough
Would this work with cashew or coconut based cheeses and milk as a substitute?
I have sub for almond milk before but haven’t tried with dairy-free cheeses. I am sure the consistency will be a bit different but other than that it should work
Tonight I made the smoked salmon breakfast casserole for dinner. Only made half of the recipe as there are only 2 of us and left out the kale (because we hate it, lol) and I didn’t have any capers. That being said, it was soooooo delicious and I am so happy there are leftovers for dinner tomorrow. This would be a marvelous thing to make if you had a crowd for breakfast or brunch or dinner, like us!
That’s great Linda, happy to hear!! And thanks for taking the time to share your experience. Your feedback is very much appreciated!! xo, Silvia
Could i make this the night before and bake it in the morning?
That should be fine, however I don’t recommend making it more then a few hours earlier and keep refrigerated in the coldest part of the fridge. Hope this helps
Wow! Looks delish but like another commenter said, I, too, do not see the suggested size of the casserole dish. Could you please clarify? Also, should it be greased? Thank you in advance. ๐
Hi, so sorry about that. It’s an 11×8 casserole. Mine is oval but a rectangular about the same size will work too.
Thank you so much for the quick reply! With all ingredients now on hand and my question answered, Iโll be making this week. ๐
awesome! please let me know how you liked it ๐