Whole Grain Mustard Salmon is a simple and flavorful recipe—crispy on the outside, tender and juicy inside.

Salmon is one of those dishes that doesn’t need much to work well. With the right marinade, it becomes something you want to make again and again.

This version uses a whole-grain mustard marinade with a mix of mustards, olive oil, and lemon juice. It adds just enough flavor without overpowering the fish.

The result is salmon that’s slightly crispy on the outside and soft and juicy inside—simple, but really satisfying.

How to choose the best ingredients for Grilled Salmon in a Wholegrain Mustard Marinade

Salmon: Choose fresh salmon with firm flesh—it should spring back when touched. Always check the use-by date. Fresh fish makes all the difference

Whole grain mustard: Use a mild whole grain mustard with visible seeds. Avoid very sharp or overly acidic versions—they can overpower the salmon

Olive oil: Use good-quality extra virgin olive oil. If needed, you can replace it with a neutral oil like rapeseed

Lemon juice: Always use freshly squeezed lemon juice—it gives a cleaner, fresher flavor than bottled versions

Top Tip for Success

If you're going to make this recipe, make sure to follow this top tip!

Roll the lemon gently before squeezing—it helps release more juice
Cook salmon on medium heat so it doesn’t burn too quickly.
At the end, increase the heat slightly to get a nice golden finish If grilling, use a tray or grill basket—it keeps the fish intact and makes handling much easier
Don’t move the salmon too early—let it sear properly so it doesn’t stick
Cook skin-side down first if using skin—it helps keep the fish juicy
Don’t overcook—salmon should stay soft and slightly moist inside
Leftover salmon works great the next day—use it cold in salads or as a sandwich filling

Other ideas for grilling

Grilled Spicy Chicken Breasts: Chicken breasts that are not dry but juicy. You absolutely must try this recipe!

Grilled Vegetables Roasted Mozzarella. I love this recipe for its freshness and the crunchiness of vegetables combined perfectly with spices. And all of this is covered with melting mozzarella. I am sure it will be your favorite recipe for warm days!

Grilled Zucchini This recipe always reminds me of the flavors of Italy: perfectly blended spices, balsamic vinegar, garlic, and grilled zucchini marinated in olive oil. It's a love affair at first bite!