There’s something truly delightful about an open face sandwich that invites you to savor each layer without the fuss of a top slice. Today, we are diving into a vibrant and flavorful dish: the Open Face Salmon Sandwich with Sweet Mustard Sauce. This dish pairs perfectly seared salmon with a luscious sweet mustard sauce, fresh vegetables, and hearty bread, creating a harmonious blend of textures and tastes. Whether you’re hosting brunch or wanting a quick yet satisfying lunch, this recipe is sure to impress. Let’s dig into the details of this delicious creation!
Why It’s Crowd-Pleasing

This Open Face Salmon Sandwich with Sweet Mustard Sauce is not only visually stunning but also packed with flavor. The combination of the rich salmon, sweet mustard sauce, and crisp veggies creates a refreshing bite that is both nourishing and satisfying. It’s a dish that caters to various palates, making it an excellent choice for gatherings or family meals. The best part? It comes together quickly, allowing you to focus on enjoying the company of your loved ones rather than spending hours in the kitchen.
What to Buy
To make this Open Face Salmon Sandwich, here’s a comprehensive list of ingredients you’ll need:
- 2 tablespoons Dijon mustard
- 1 tablespoon honey
- 2 tablespoons olive oil
- 1/2 teaspoon lemon juice
- 1/4 teaspoon salt
- Freshly ground black pepper
- 1 egg
- 4-ounces salmon fillets (about 1 inch thick, skin removed if desired)
- 3 tablespoons olive oil (divided)
- 2 tablespoons Sweet Mustard Sauce (prepared from the above ingredients)
- Salt and freshly ground black pepper
- 1 tomato, cut into four 1/2-inch slices
- 1/4 red onion, sliced thinly
- 8 slices dark rye bread or multi-grain bread
- Mixed leafy greens
- 1 avocado, halved, pitted, and cut into 1/2 inch slices
- 2 teaspoons capers, drained
Hardware & Gadgets
To whip up this delightful sandwich, you’ll need a few essential kitchen tools:
- Non-stick skillet: Perfect for cooking the salmon and egg without sticking.
- Mixing bowl: For combining the sweet mustard sauce ingredients.
- Spatula: For flipping the salmon and egg with ease.
- Knife: For slicing vegetables and bread.
- Cutting board: A stable surface for chopping and prepping.
Build Open Face Salmon Sandwich with Sweet Mustard Sauce Step by Step

Step 1: Prepare the Sweet Mustard Sauce
In a mixing bowl, whisk together 2 tablespoons of Dijon mustard, 1 tablespoon of honey, 2 tablespoons of olive oil, 1/2 teaspoon of lemon juice, 1/4 teaspoon of salt, and a dash of freshly ground black pepper. Adjust the sweetness by adding more honey if desired. This sauce will add a delightful zing to your sandwich.
Step 2: Cook the Salmon
Heat 2 tablespoons of olive oil in a non-stick skillet over medium heat. Season your salmon fillets with salt and pepper. Once the oil is hot, add the salmon to the skillet, cooking for about 4-5 minutes on each side or until the salmon flakes easily with a fork. Remove from the skillet and let it rest for a few minutes.
Step 3: Prepare the Egg
In the same skillet, crack an egg and cook it sunny-side up or to your desired doneness. The runny yolk adds a rich creaminess to the sandwich, enhancing the overall flavor profile.
Step 4: Toast the Bread
While the egg is cooking, toast the slices of dark rye or multi-grain bread until golden brown. You can do this in a toaster or on a skillet for added flavor.
Step 5: Assemble the Sandwich
Spread a generous amount of the sweet mustard sauce on each slice of toasted bread. Layer with mixed leafy greens, followed by the cooked salmon, a slice of tomato, red onion, avocado slices, and capers. Finally, top it all with the fried egg.
Step 6: Serve and Enjoy!
Serve your Open Face Salmon Sandwich immediately, garnishing with additional black pepper and a drizzle of sweet mustard sauce if desired. Enjoy your culinary masterpiece with a side salad or some crispy chips!
Nutrition-Minded Tweaks

If you want to make this Open Face Salmon Sandwich even healthier, consider the following tweaks:
- Use whole-grain bread for added fiber.
- Replace the honey with agave syrup or maple syrup for a vegan option.
- Add more leafy greens or sliced cucumbers for extra crunch and nutrients.
- Opt for grilled or baked salmon instead of pan-seared to reduce oil usage.
Mistakes That Ruin Open Face Salmon Sandwich with Sweet Mustard Sauce
When making an Open Face Salmon Sandwich, avoid these common pitfalls:
- Overcooking the salmon: This can lead to dry fish. Keep an eye on it and cook just until it flakes easily.
- Skipping the sauce: The sweet mustard sauce is key to adding flavor; don’t skip it!
- Using stale bread: Fresh bread enhances the sandwich’s texture, so ensure your bread is fresh and toasted properly.
- Not seasoning properly: Always season your salmon and vegetables to enhance their natural flavors.
Storage Pro Tips
If you have leftovers or want to prepare this dish in advance, consider these storage tips:
- Store cooked salmon in an airtight container in the fridge for up to 2 days.
- Keep the sweet mustard sauce in a sealed jar; it lasts about a week in the refrigerator.
- Assemble sandwiches only when ready to eat to prevent sogginess from the sauce and vegetables.
- Consider freezing the salmon for longer storage, then thaw and reheat before serving.
Handy Q&A
Can I use canned salmon for this recipe?
Absolutely! Canned salmon can be a convenient alternative. Just be sure to drain it well and heat it before assembling your sandwich.
What can I substitute for Dijon mustard?
If you don’t have Dijon mustard, yellow mustard or whole grain mustard can work, but they will slightly alter the flavor of the sweet mustard sauce.
Can this sandwich be made ahead of time?
While it’s best enjoyed fresh, you can prepare the components in advance. Store the sauce, cooked salmon, and toasted bread separately and assemble just before serving.
What are some side dishes that pair well with this sandwich?
Consider serving your Open Face Salmon Sandwich with a light salad, roasted vegetables, or even Sticky Honey Soy Salmon Rice Bowls for a complete meal.
Ready, Set, Cook
Gather your ingredients, put on your apron, and get ready to create a delicious Open Face Salmon Sandwich with Sweet Mustard Sauce that will elevate your meal game. With its simple preparation and vibrant flavors, this recipe stands out as a healthy option that doesn’t compromise on taste. You’ll find yourself making it again and again, whether for a quick lunch or an impressive dinner. Enjoy every bite of this culinary delight!

Open Face Salmon Sandwich with Sweet Mustard Sauce
Ingredients
Equipment
Method
- In a mixing bowl, whisk together 2 tablespoons of Dijon mustard, 1 tablespoon of honey, 2 tablespoons of olive oil, 1/2 teaspoon of lemon juice, 1/4 teaspoon of salt, and a dash of freshly ground black pepper. Adjust the sweetness by adding more honey if desired.
- Heat 2 tablespoons of olive oil in a non-stick skillet over medium heat. Season your salmon fillets with salt and pepper. Cook for about 4-5 minutes on each side or until the salmon flakes easily with a fork. Remove and let it rest.
- In the same skillet, crack an egg and cook it sunny-side up or to your desired doneness.
- Toast the slices of dark rye or multi-grain bread until golden brown.
- Spread a generous amount of the sweet mustard sauce on each slice of toasted bread. Layer with mixed leafy greens, cooked salmon, a slice of tomato, red onion, avocado slices, and capers. Top with the fried egg.
- Serve your Open Face Salmon Sandwich immediately, garnishing with additional black pepper and a drizzle of sweet mustard sauce if desired.
Notes
- Use whole-grain bread for added fiber.
- Replace honey with agave syrup for a vegan option.
- Assemble sandwiches only when ready to eat to prevent sogginess.
