Walnut-crusted salmon with roasted green beans
September 4, 2026 · 3 min read
A crust of finely chopped walnuts and olive oil turns a plain baked salmon fillet into something you would order at a restaurant, and it takes about the same 15 minutes in the oven. The walnuts toast as the salmon bakes, so the topping goes from raw to golden and crisp in one pass, no separate pan or step. Green beans roast on the other half of the same sheet pan, so dinner for four comes off one dish.
The crust holds together because the oil binds the chopped walnuts into a paste-like mix that presses onto the fish and sets as it bakes. Chop the walnuts fine rather than leaving them in big pieces — a fine chop packs tighter and stays put instead of scattering off the fillet.
Ingredients
- 1 pound green beans, trimmed
- 1 tablespoon olive oil (for the green beans)
- 1 cup walnuts, finely chopped
- 2 tablespoons olive oil (for the walnut crust)
- 1 garlic clove, minced
- 2 tablespoons chopped fresh parsley
- 4 salmon fillets (about 6 oz each), skin removed
- 1 tablespoon Dijon mustard
- 1 tablespoon fresh lemon juice
- Salt and black pepper to taste
Steps
- Heat the oven to 400°F and line a sheet pan with foil. Toss the green beans with the tablespoon of olive oil, then spread them over one side of the pan.
- In a small bowl, mix the chopped walnuts with the remaining 2 tablespoons olive oil, the garlic, and the parsley until the mixture holds together when pressed with a spoon.
- Pat the salmon dry and season both sides with salt and pepper. Whisk the mustard and lemon juice together and brush it over the top of each fillet, then press a quarter of the walnut mixture onto each one, packing it down firmly. Set the fillets on the empty side of the pan.
- Bake 12 to 15 minutes, until the walnut crust is toasted and the salmon flakes at the thickest part and the green beans are tender-crisp. Season the beans with a little salt to taste and serve straight from the pan.
How it comes together
Makes 4 servings — read left to right; each column combines what's behind it.
PrepTrim the green beans and finely chop the walnuts before you start — the crust comes together in a minute once the walnuts are chopped.
| 1 lb · 455 g green beanstrimmed | Roast the green beans | Bake and serve | ||
| 1 tbsp · 14 g olive oilfor the green beans | ||||
| 1 cup · 115 g walnutsfinely chopped | Mix the walnut crust | |||
| 2 tbsp · 27 g olive oilfor the walnut crust | ||||
| 1 garlic cloveminced | ||||
| 2 tbsp · 7 g fresh parsleychopped | ||||
| 4 salmon filletsesabout 6 oz each, skin removed | Crust the salmon | |||
| 1 tbsp · 16 g Dijon mustard | ||||
| 1 tbsp · 15 g fresh lemon juice | ||||
| salt and black pepperto taste |
Scaling adjusts quantities only — cooking times and pan sizes may need judgment. Grams are rounded for the kitchen.
Notes and swaps
Pecans work in place of walnuts with the same crunch and a slightly sweeter flavor. A food processor pulses the nuts fine in seconds if you would rather not chop by hand — just stop before it turns to nut butter. Panko or whole-grain breadcrumbs stirred into the walnut mixture stretch the crust further and add crunch without changing the flavor much. Asparagus or broccoli roast alongside the salmon the same way the green beans do here, so swap in whatever vegetable is in the fridge. A squeeze of extra lemon over the finished plate brightens the richness of the walnuts.
The macros above are an estimate. Tell MIND Diet Companion "walnut-crusted salmon with green beans" and it logs the fish, nuts, and vegetable groups this plate covers, so you can see how the day is stacking up against the pattern.
FAQ
Will the walnut crust fall off the salmon? Pressing it on firmly and letting the mustard-lemon layer act as glue keeps most of it in place. A little scattering on the pan is normal — spoon any loose bits back over the fillet before serving.
Can I use frozen salmon? Yes. Thaw it fully in the fridge overnight and pat it very dry before crusting — extra moisture on the surface keeps the walnut mixture from sticking well.
How do I know the salmon is done? It flakes easily with a fork at the thickest part and turns opaque all the way through. At 400°F, 6-ounce fillets usually need 12 to 15 minutes; check a minute or two early on thinner tail pieces.
Can I make the walnut crust ahead? Yes, mix it up to a day ahead and keep it covered in the fridge. Bring it to room temperature before pressing it onto the salmon so it presses on evenly rather than crumbling.
How is this different from a salmon-and-white-bean plate? This one leans on nuts and a crunchy crust rather than beans on the side — a good rotation with herb-baked salmon over white beans and greens if you want two different ways to work fish into the week. Both cover fish, olive oil, and a vegetable in one meal.