RecipesFrom the test kitchen
Baked Salmon with Roasted Sweet Potato
Sockeye salmon over roasted sweet potato wedges and lemony spinach, a dinner that stacks potassium and vitamin A on one sheet pan and one skillet.
Baked salmon and sweet potato is one of the easiest potassium-rich dinners you can put together. Raw sockeye salmon carries 367 mg of potassium per 100 grams, raw sweet potato adds another 337 mg per 100 grams, and the spinach on the side layers in 558 mg more. Sweet potato also brings a serious vitamin A count at 709 micrograms per 100 grams, and spinach follows with 469. Roast the wedges while the salmon bakes on the same sheet pan schedule, wilt the greens at the end, and dinner is done in about 40 minutes.
Method
- 1
Heat the oven to 425 F. Scrub the sweet potato, leave the skin on, and cut it into wedges about 3/4 inch thick.
- 2
Toss the wedges with 1 tablespoon of olive oil, the smoked paprika, and a pinch of salt. Spread them cut side down on a sheet pan and roast for 15 minutes.
- 3
Pat the salmon fillets dry and season both sides with salt and pepper. Flip the sweet potato wedges, slide them to one side of the pan, and lay the fillets skin side down on the open half.
- 4
Return the pan to the oven and bake for 10 to 12 minutes, until the salmon flakes easily at the thickest point and the wedges are browned at the edges.
- 5
While the salmon finishes, warm the remaining tablespoon of olive oil in a skillet over medium heat. Add the minced garlic and cook for 30 seconds until fragrant.
- 6
Add the spinach in big handfuls and toss for 1 to 2 minutes, just until wilted. Pull it off the heat and stir in the lemon juice.
- 7
Divide the spinach between two plates, top with the salmon, and arrange the sweet potato wedges alongside. Serve warm.
Why this scores well
Original analysis by NutriVerdict
This plate stacks three of the strongest potassium and vitamin A sources in our index. Raw spinach scores a perfect 100 on our Nutrient Density Score and tops the potassium column at 558 mg per 100 grams. Raw sweet potato scores 91 and is one of our flagged vitamin A rich vegetables at 709 micrograms per 100 grams, with another 337 mg of potassium. Sockeye salmon scores 74, carried by 22.2 grams of protein and 367 mg of potassium per 100 grams. Even the supporting cast pulls weight: raw garlic scores 80 with 401 mg of potassium per 100 grams, and raw lemon juice scores 90. Combined, the three headline ingredients deliver over 1,200 mg of potassium per 100 gram serving of each, before you count portion sizes. Want to run your own numbers? Add these foods in our plate builder and see the combined totals update live.
Tips
- Keep the skin on the sweet potato. It crisps in the oven, holds the wedges together, and you keep the fiber that peeling throws away.
- Sockeye is leaner than farmed Atlantic, so it overcooks fast. Pull it as soon as the flesh turns opaque and flakes, usually right at the 10 minute mark for a standard fillet.
- Doubling the recipe? Use two sheet pans so the wedges roast instead of steaming, and rotate the pans halfway through.
What this plate is built on
This recipe leans on foods that are good sources of vitamin c, protein, vitamin a, vitamin e and dietary fiber. The recipe density score above is the average Nutrient Density Score of its whole foods, computed the same way for every recipe on the site.
Storage and make-ahead
Refrigerate leftover salmon and sweet potato in separate covered containers for up to 3 days. Reheat the fish gently at low heat, or eat it cold flaked over greens, since high heat dries it out fast. Cooked salmon freezes for up to 2 months though the texture softens, and the wilted spinach is best eaten fresh.
Variations and swaps
- Swap the sockeye for boneless chicken thighs, adding a few minutes to the roasting time.
- Trade the sweet potato for cubed butternut squash in fall or small new potatoes in spring.
- Push it toward a citrus-herb direction with orange zest and fresh dill in place of the smoked paprika.
What to serve it with
This is close to a full plate already, but a scoop of cooked quinoa, farro, or brown rice stretches it further and soaks up the pan juices. A wedge of lemon and a simple green salad on the side keep everything bright.
Note: This is food, not medical advice. The combination works because salmon, sweet potato, and spinach each contribute potassium from a different food group, while the sweet potato and spinach handle the vitamin A. All figures come from USDA FoodData Central entries tracked in our index.
Frequently asked questions
Can I use a different fish?
Yes. Any salmon fillet works, and firmer fish like Arctic char or a thick cod loin bake in a similar way. Judge by thickness rather than the clock, since leaner fish cooks faster than fatty sockeye.
How do I know when the salmon is done?
Bake at 400F until the thickest part flakes with a fork and the center is just opaque, usually 12 to 15 minutes for 6 oz fillets. Pull it a touch early, because it keeps cooking off the heat.
Can I prep any of it ahead?
Roast the sweet potato wedges up to 2 days ahead and reheat them while the salmon bakes. Cut the wedges evenly, about 3/4 inch, so they cook through at the same rate.
How do I scale it up for a crowd?
The recipe doubles cleanly to serve four. Use two sheet pans so the wedges and fillets are not crowded, or they will steam instead of browning at the edges.
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