Appetizers

Smoked Salmon Crostini with Egg Mousse

Name: Smoked Salmon Crostini with Egg Mousse
Prep time: 15 min
Cook time: 7 min
Total time: 22 min
Cuisine: American
Ingredients: 1 baguette, sliced; 4 ounces smoked salmon, thinly sliced; 2 hard-boiled eggs, peeled; 2 tablespoons mayonnaise; 1 tablespoon cream cheese; 1 teaspoon lemon juice; Salt and pepper to taste; Fresh chives or dill for garnish

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Smoked salmon and a silky egg mousse come together on crunchy toasted baguette slices to make an elegant, easy appetizer. The crostini have a bright lemon tang, a creamy, silky texture from the egg mousse, and a smoky, salty bite from the salmon. They smell warm and toasty from the bread, and they look bright topped with green chives or dill. If you like other salmon snacks, you might also enjoy a different take on salmon in an easy weeknight option like air fryer salmon tacos with slaw, but these crostini are perfect for parties, brunch, or a light dinner.

Recipe Information

Prep Time: 15 minutes
Cook Time: 7 minutes
Total Time: 22 minutes
Servings: 8 crostini (about)
Difficulty Level: Easy

Nutrition Information

Estimated per serving (1 crostini; yields ~8):

Calories per serving: 170 kcal
Protein: 9 g
Carbohydrates: 17 g
Fat: 9 g
Fiber: 1 g
Sugar: 1.5 g
Sodium: 370 mg

Nutrition values are approximate and depend on the brand of smoked salmon, bread, and condiments you use.

Why Make This Smoked Salmon Crostini with Egg Mousse

This recipe is fast, impressive, and balanced. The egg mousse brings a rich, creamy texture that pairs beautifully with smoky salmon and crisp toasted baguette. It’s great for last-minute guests because you can toast bread quickly and assemble just before serving. The flavors are bright (lemon), savory (salmon and eggs), and fresh (chives or dill), giving a satisfying contrast in every bite.

How to Make Smoked Salmon Crostini with Egg Mousse

The method is simple: toast, mix, spread, and top. Toasting the baguette adds crunch and warmth. Whipping the eggs with mayo and cream cheese makes a smooth mousse that spreads easily. Finish with a squeeze of lemon and fresh herbs for color and brightness.

Ingredients:

1 baguette, sliced
4 ounces smoked salmon, thinly sliced
2 hard-boiled eggs, peeled
2 tablespoons mayonnaise
1 tablespoon cream cheese
1 teaspoon lemon juice
Salt and pepper to taste
Fresh chives or dill for garnish

Directions:

Step 1: Preparation

Preheat the oven to 375°F (190°C). Arrange the baguette slices on a baking sheet so they sit in a single layer.

Step 2: Mixing

In a bowl, mash the hard-boiled eggs until mostly smooth. Add the mayonnaise, cream cheese, lemon juice, and a pinch of salt and pepper. Stir or beat until the mixture is creamy and spreadable. Taste and adjust salt, pepper, or lemon.

Step 3: Cooking

Toast the baguette slices in the preheated oven for about 5–7 minutes, until they are golden and crisp at the edges. Watch closely so they don’t burn.

Step 4: Finishing

Spread a generous layer of the egg mousse onto each toasted baguette slice. Top each piece with a slice of smoked salmon. Garnish with chopped chives or a small sprig of dill. Serve immediately so the crostini stay crisp.

How to Serve Smoked Salmon Crostini with Egg Mousse

Serve these crostini warm or at room temperature. Arrange them on a platter with lemon wedges for extra brightness. Pair with a light salad, sparkling wine, or a crisp white wine. For a brunch spread, add fresh fruit and a simple green salad. For cocktail hour, serve with other finger foods like olives, cheese, and nuts.

How to Store Smoked Salmon Crostini with Egg Mousse

Assembled: Not recommended to store for more than 1–2 hours; the bread will soften. Keep assembled crostini covered in the fridge for up to 2 hours if needed, then serve quickly.
Components separately: Store egg mousse in an airtight container in the refrigerator for up to 3 days. Keep smoked salmon sealed and refrigerated—use within 3–4 days of opening (follow package guidance). Toast baguette slices and store them in a sealed container at room temperature for 1–2 days; re-crisp in a 350°F (175°C) oven for 3–5 minutes before topping.
Freezing: Do not freeze assembled crostini. You can freeze unsliced baguette or extra mousse (mousse texture may change slightly).

Expert Tips for Perfect Smoked Salmon Crostini with Egg Mousse

Use room-temperature cream cheese for easier mixing and a silkier mousse.
Mash the eggs well, or pulse briefly in a food processor for an ultra-smooth texture.
Taste and adjust: smoked salmon is salty, so add salt sparingly to the mousse.
For crisper crostini, toast the baguette slices a little longer and let them cool on a rack.
Slice the baguette on the diagonal for larger topping surface and better presentation.
Garnish just before serving to keep herbs bright and bread crisp.
If your smoked salmon is very thick, fold it gently rather than piling to keep the crostini balanced.

Delicious Variations

Lemon-Dill Cream: Add extra lemon zest and chopped dill to the mousse for a tangier, herb-forward spread.
Capers and Onion: Top with a few capers and thinly sliced red onion for briny contrast.
Avocado Layer: Spread thin slices of ripe avocado under the egg mousse for creaminess and color.
Egg–Cheddar Twist: Stir in 2 tablespoons of grated sharp cheddar into the mousse for a savory, melty hint.
Cucumber Base: Add a thin cucumber slice between mousse and salmon for a cool crunch.

Frequently Asked Questions

Q: Can I use fewer or more eggs?
A: Yes. If you want a lighter mousse, use 1 egg and increase cream cheese slightly. For more body, add a third egg. Adjust mayo and cream cheese to reach a spreadable consistency.

Q: Is smoked salmon safe to eat without cooking?
A: Yes. Smoked salmon is typically fully cooked by the smoking process and is safe to eat cold. Always buy from a reputable source and keep it refrigerated.

Q: Can I make the mousse ahead of time?
A: You can make the egg mousse up to 3 days ahead and store it in an airtight container in the fridge. Bring it to room temperature before spreading for best texture.

Q: How do I keep the crostini from getting soggy?
A: Toast the baguette well and assemble crostini just before serving. You can also spread a thin layer of cream cheese directly on the toast first to create a moisture barrier before adding mousse.

Q: What’s a good substitute for mayonnaise?
A: Use Greek yogurt or mashed avocado for a lighter option. Keep in mind the flavor and texture will shift—Greek yogurt gives tang, avocado adds richness.

Q: Can I use a different bread?
A: Yes. Use sliced sourdough, ciabatta, or crackers if you prefer. Just toast or warm them so they hold the mousse and salmon.

Q: How much salmon per crostini is ideal?
A: A thin slice folded once or twice is enough—about 0.5 oz per crostini. This balances the mousse without overpowering the toast.

Conclusion

This Smoked Salmon Crostini with Egg Mousse is a quick, elegant bite that combines creamy, smoky, and bright flavors in every mouthful. It’s easy to scale, fun to garnish, and forgiving for home cooks. If you want inspiration for a related twist, see a savory alternative in this recipe for Smoked Salmon Crostini with Egg–Cheddar Mousse. Give these crostini a try at your next gathering — they come together fast and always disappear quickly.