This salmon dinner looks fancy without being difficult. Roasted potatoes, buttery tomato sauce, and warm vegetables do the showing off.
I made this once when I wanted to impress someone but had zero patience. The sheet pan quietly saved the evening.
The warm arugula salad keeps everything feeling fresh. Because butter sauce is wonderful, but apparently vegetables still need an invitation.

Salmon with Butter Sauce and Lemon Potatoes and Warm Vegetable Salad
EQUIPMENT (PAID LINKS)
- Oven
- Plate
- Rimmed baking sheet
- Aluminum foil
- Food processor
- Large serving bowl
- Instant-read thermometer
Ingredients
- 2 salmon fillets about 6 ounces each
- ½ cup lemon dressing divided
- 12 ounces small red potatoes thinly sliced
- 2 teaspoons chopped fresh thyme
- 1 pint grape tomatoes
- 1 teaspoon kosher salt
- ½ teaspoon ground black pepper
- 2 tablespoons salted butter
- 4 garlic cloves minced
- ¼ teaspoon crushed red pepper
- 1 small onion thinly sliced
- 1 small zucchini sliced
- 1 small yellow summer squash sliced
- 4 cups fresh arugula
Instructions
- Preheat Oven: Preheat the oven to 425°F. Line a rimmed baking sheet with aluminum foil.
- Dress Salmon: Place the salmon fillets on a plate. Spoon 2 tablespoons of lemon dressing over each fillet, using ¼ cup total. Spread the dressing evenly over the salmon and set it aside.
- Slice Potatoes: Cut the red potatoes into thin, even rounds so they cook at the same rate.
- Prepare Thyme: Remove the thyme leaves from the stems and finely chop them.
- Season Vegetables: Place the sliced potatoes and grape tomatoes in a large mixing bowl. Add the chopped thyme, 3 tablespoons of lemon dressing, kosher salt, and black pepper.

- Toss Vegetables: Toss the potatoes and tomatoes until they are evenly coated with the dressing and seasonings.
- Arrange Vegetables: Spread the potato and tomato mixture in a single layer on the prepared baking sheet.
- Roast Vegetables: Roast the vegetables for 20 minutes, or until the potatoes begin to soften and the tomatoes start to blister.
- Add Salmon: Remove the baking sheet from the oven. Carefully move the vegetables toward one side of the pan and place the dressed salmon fillets on the open side.
- Bake Salmon: Return the baking sheet to the oven. Bake for 10 to 12 minutes, or until the salmon flakes easily with a fork and reaches 145°F in the thickest part.

- Plate Salmon and Potatoes: Transfer the cooked salmon and roasted potato slices to serving plates. Leave the roasted tomatoes and their juices on the baking sheet.
- Blend Tomato Sauce: Transfer the roasted tomatoes and their juices to a food processor. Add the salted butter and blend until the mixture is smooth and creamy.
- Sauce Salmon: Spoon the warm tomato-butter sauce over the baked salmon.
- Prepare Garlic: Finely mince the garlic cloves if they have not already been prepared.
- Heat Dressing: Place a large skillet over medium heat. Add the remaining 1 tablespoon of lemon dressing and warm it for about 30 seconds.
- Sauté Garlic: Add the minced garlic and crushed red pepper. Cook for about 30 seconds, stirring constantly, until fragrant.
- Cook Vegetables: Add the sliced onion, zucchini, and yellow squash. Increase the heat to medium-high and cook for 5 to 7 minutes, stirring often, until the vegetables are tender but not mushy.

- Prepare Arugula: Place the fresh arugula in a large serving bowl.
- Make Warm Salad: Pour the hot onion and squash mixture over the arugula. Toss gently until the arugula softens slightly from the heat.
- Serve Dinner: Serve the warm vegetable salad alongside the salmon, lemon potatoes, and buttery tomato sauce.
Video Recipe
Salmon with Butter Sauce and Lemon Potatoes: Fancy Dinner, Minimal Drama
I’ve made this enough times to know where the shortcuts are hiding. Let’s save the effort for eating, shall we?

Slice the Potatoes Thin
Thin potato slices cook faster and get those irresistible golden edges. If your slices look like poker chips, they’re probably too thick. A mandoline works quickly, but a sharp knife and moderate patience are perfectly acceptable.
Give the Potatoes a Head Start
Roast the potatoes before adding the salmon so everything finishes together. Salmon cooks quickly, while potatoes enjoy taking their sweet time like they pay rent in your oven.
Swap the Salmon
Trout, cod, or halibut can stand in for salmon. Choose fillets of similar thickness and start checking them early because dry fish is not a personality trait—it’s just sad.
Use Any Small Tomato
Cherry, grape, or chopped Roma tomatoes all work in the buttery sauce. Softer, slightly wrinkled tomatoes are especially good here, so congratulations—you finally have a noble purpose for the forgotten produce drawer residents.
Cheat on the Lemon Dressing
A bottled lemon vinaigrette is completely respectable and saves time. I’ve made homemade dressing, and I’ve also enjoyed sitting down before dinner. Both choices have merit.

Don’t Overcook the Salmon
Pull the salmon when it reaches 145°F in the thickest part, or slightly earlier if you know it will rest for a few minutes. An instant-read thermometer removes the guesswork and prevents the classic “just one more minute” disaster.
Change Up the Greens
Spinach, baby kale, or mixed greens can replace the arugula. Spinach wilts faster, while kale needs a little more time with the warm vegetables because apparently even salad can be stubborn.
Use Whatever Squash You Have
All zucchini or all yellow squash is fine. You can also use thinly sliced bell peppers, asparagus, or green beans. This is dinner, not a vegetable color-matching exam.
Make the Sauce Without a Food Processor
Mash the roasted tomatoes with butter using a fork for a chunkier sauce. An immersion blender also works, but honestly, fewer dishes usually tastes better.
Prep It Ahead
Slice the vegetables and mix the dressing up to one day ahead. Keep everything refrigerated in separate containers so the potatoes stay firm and the greens don’t wilt before their big moment.
Store the Leftovers Properly
Refrigerate the salmon, potatoes, sauce, and salad separately in airtight containers for up to three days. Reheat the salmon gently at 300°F or in short microwave bursts because high heat turns yesterday’s lovely dinner into fish-flavored roofing material.
Turn Leftovers Into Lunch
Flake cold salmon over the leftover vegetables, tuck everything into a wrap, or pile it onto greens with extra dressing. It’s less “sad desk lunch” and more “look who accidentally planned ahead.”
