Lemon Garlic Butter Salmon With Roasted Broccoli
Four fillets, one sheet pan, and 18 minutes at 425 degrees F. That is the whole plan. The broccoli goes in first so it has time to char while the salmon stays tender, and the butter goes on at the end so it tastes rich instead of burnt.
Most home cooks bake salmon at 350 degrees F because that is what the packet says. The result is a fillet that steams in its own moisture and turns chalky near the edges. At 425 degrees F the outside sets fast, the inside stays glossy, and dinner is on the table before the oven has even finished preheating.
Why 425 Degrees F Beats 350 Degrees F for Salmon
A hotter oven shortens the window in which the proteins tighten and squeeze out water. Cook the same fillet at 350 degrees F for 25 minutes and you lose roughly a tablespoon of liquid to the pan. Cook it at 425 degrees F for 12 and the surface seals while the center barely reaches 125 degrees F. The texture difference is obvious on the first bite.
Thickness matters more than weight here. A fillet that is 1 inch thick needs about 12 minutes; a 1.5 inch center-cut piece needs closer to 16. Press the thickest point with a fork. If it flakes into large opaque pieces, it is done. If it still looks translucent in the middle, give it two more minutes rather than turning the heat up.
The Broccoli Goes In First, Not Last
Broccoli needs a head start of about 6 minutes. Toss the florets with oil, salt, and a pinch of red pepper flakes, spread them in a single layer, and slide the pan in alone. When the edges of the florets look browned and slightly crisp, push the broccoli to the outer edges and lay the salmon in the middle. Everything finishes together.
Crowding is the usual mistake. If the florets are stacked more than one layer deep, they steam and turn army green instead of deep green with browned tips. Use two pans rather than piling one. The extra pan is worth more than the extra washing up.
Butter at the End, Never at the Start
Butter has a smoke point around 300 degrees F, well below the oven temperature here, so melted butter brushed on at the start will taste scorched. Instead, pull the pan out, dot the fillets with cold butter, and let the residual heat melt it into a sauce with the lemon juice and minced garlic. Two minutes of resting does the work for you.
Ingredients
- 4 salmon fillets, 6 oz each, skin removed
- 1 1/2 lb broccoli, cut into large florets
- 3 tbsp olive oil, divided
- 3 tbsp cold unsalted butter, cubed
- 4 garlic cloves, minced
- 1 large lemon, half juiced and half sliced
- 1/2 tsp red pepper flakes
- 1 tsp kosher salt and 1/2 tsp black pepper
- 2 tbsp chopped fresh parsley
Steps
Heat the oven and dry the fish
Set the oven to 425 degrees F with a rack in the upper third. Pat the salmon dry on both sides with paper towels, then season with salt and pepper. Surface moisture is what keeps a fillet from browning, so this step is worth an extra 30 seconds.
Season the broccoli generously
Toss the florets with 2 tablespoons of olive oil, the red pepper flakes, and half the salt. Spread them in one layer on a large sheet pan. They should have space between them; if they do not, split the batch across two pans.
Give the broccoli a 6 minute head start
Roast the broccoli alone for 6 minutes. You are looking for browned tips and a deep green color. This is the step that separates roasted broccoli from soggy broccoli.
Add the salmon to the center
Push the broccoli toward the edges of the pan. Brush the fillets with the remaining oil, lay them in the middle, and top each with two lemon slices. Return the pan to the oven for 10 to 12 minutes depending on thickness.
Build the pan sauce off the heat
Take the pan out. Scatter cold butter cubes and minced garlic over the hot fillets, then squeeze the lemon half over everything. The butter melts on contact and picks up the garlic without turning bitter.
Rest, then finish with parsley
Let the pan sit for 2 minutes so the sauce thickens slightly and the fish relaxes. Spoon the pan juices over each fillet, add chopped parsley, and serve straight from the pan.
What to Change When You Only Have Frozen Salmon
- Thaw frozen fillets overnight in the fridge, never on the counter, then pat them very dry. Frozen fish holds more water and will steam if you skip the drying step.
- Swap broccoli for broccolini or asparagus, but cut the head start to 4 minutes because both cook faster.
- Leftovers keep two days in the fridge. Reheat gently at 300 degrees F for 8 minutes; the microwave turns salmon rubbery.
Nutrition per serving
| Calories | 415 kcal |
| Protein | 35 g |
| Carbohydrates | 12 g |
| Fat | 26 g |
| Sodium | 520 mg |
