Slow-Baked Salmon

Slow-baked salmon is easily one of my favorite ways to cook salmon - emphasis on easy! Baking salmon at a low temperature results in super tender, flaky, buttery fish that is almost impossible to overcook. If cooking salmon scares you, give this technique a try!

If I had to choose a dish I make more than any other, I think it may be slow-baked salmon.

I'm almost sorry to admit it - as it sounds incredibly boring - but man do I eat this salmon ALL THE TIME.

Let's get to it!

Why (HOW) is slow-baked salmon so good??

So many reasons! Honestly, the fact that it is so easy is just the cherry on top of the (fish) sundae (ew).

The main reasons why I like to cook my salmon low and slow in the oven are:

• Cooking salmon and at a low temperature for a little longer than usual with LOTS of olive oil results in the most tender, buttery salmon of your life.
• While it may take a bit longer than regular baked salmon, or searing on the stovetop, it's a really nice, hands-off way to cook salmon. No splattering everywhere, and as an added bonus slow-baked salmon tends to smell the least fishiest. Depending on the size of your fish, this is also a great technique for baking salmon in the toaster oven!
• The flavor possibilities are endless! Most of the time I do this simple shallot/garlic mix because I always have those on hand. But you can take this in so many different directions. Try throwing some thinly sliced lemon slices on top for a beautiful lemon flavor. Pile on some herbs you have laying around - thyme, dill, oregano and chives are especially wonderful. Or go a little spicy, and scatter over thinly sliced chilis.
• This salmon tastes great on its own as a main dish, but I also love throwing it on salads, making wraps or tacos, adding it to pasta and so much more. It's incredibly versatile, and because of that, so perfect for meal prep. Because it's cooked so slowly, you also really don't have to worry about overcooking it later when heating it up.

I should note here that slow-baked salmon is not the prettiest when it comes out of the oven, but the taste is worth it. The white stuff you see in the photos here is albumin - a liquid protein in salmon that solidifies a bit as it cooks. It's totally harmless and fine to eat - just looks a little unappetizing!

What is the best temperature for cooking salmon in the oven?

For the best slow-baked salmon, I like to keep things at 275-300F. So basically, I'm flexible but not thaaaat flexible. I've found that anything lower than 250F is just kind of unnecessary, but anything over 300F is a little too hot. Most of the time I go with 300F just to shave a few minutes of cooking time off, but it's totally up to you and your oven. If you are baking your salmon in a toaster oven, go for 275F. I've found that the heat in toaster ovens tend to be a bit stronger as your food will be closer to the heat source, so in this case go a little lower and keep a close eye on it.

Speaking of, it may take you a couple of tries to get the perfect temperature + bake time combo for you. My biggest advice is to just keep checking (in this case, opening and closing the oven door a few times doesn't hurt!) and, if possible, get yourself a meat thermometer so you can really keep an eye on how things are going. I am totally obsessed with a medium-rare salmon, so I err on the side of undercooking and shoot for 120-125F. But if you prefer your salmon a little more well-done, keep baking until you hit 145-160F (depending on how well done you want it).

If you are meal prepping this salmon, or if you plan on having any leftovers, I highly recommend undercooking it just a bit from what you prefer. This will ensure your salmon doesn't dry out over the next few days.

What you need for slow-baked salmon

Salmon. You can slow-bake just about any sort of salmon. I generally like to go for 1-2 lb filets so I know I'll have some leftovers, but you can do multiple smaller filets together as well. I often leave mine with the skin on, but skinless works beautifully.

Olive oil. I know this feels like a lot of olive oil to use (and it is), but the flavor is unmatched. For a really simple slow-baked salmon that can be used in multiple dishes, I highly suggest using all olive oil. With that said, if you want to cut it with a few tablespoons of a neutral, less expensive oil you absolutely can.

Shallot. I love love shallots so I like to quickly slice one up and throw it in for just a but of onion-y flavor. Feel free to substitute regular or red onion, or even scallions if you prefer.

Garlic. Again, I thinly slice these but you could mince them or honestly just smash a few cloves and throw them on the sheet pan!

Other flavor ideas: Thinly sliced lemon or orange (the zest is great too!, and herbs like thyme, dill, chives or oregano are all good ideas here.

How to make it

Prep and flavor the salmon

Add your salmon to a baking sheet (lined with parchment for easy cleanup) and evenly scatter over the shallots and garlic. If you're using any other flavorings like citrus or herbs you can add that now as well.

Pour over olive oil

Carefully and evenly pour olive oil over the entire filet. It will run down the sides of the filet, so use a spoon to scoop up a bit and make sure the entire salmon is covered in oil with as much on the top as possible.

Bake!

Place in oven at 300F and let cook for about 25 minutes. Depending on the thickness of your salmon and how well done you like it, I'd start checking at the 20 minute mark. If you have a meat thermometer, 120-125 is a good range for medium-rare. Feel free to go under/over as you'd like based on how you prefer your salmon. Don't worry about opening and closing the oven multiple times during this process. It won't affect the final dish.

Serve hot or cold

Slow-baked salmon is as delicious straight out of the oven as it is the fridge. Serve it as-is with your favorite sides, or use it cold (or room temp) in salads, sandwiches and more!

How to serve slow-baked salmon

If you want to use this salmon as a main dish, it will taste great with these sides:

• Brussels cauliflower rice
• Roasted gnocchi with lemon garlic brown butter
• Roasted artichoke and marinated white bean salad (this is great because you can use up the extra herbs from the salad to throw in with your salmon!)
• Roasted cabbage with sweet and spice orange dressing
• Crispy grains and chickpeas with garlic tahini yogurt
• Roasted maple sesame broccoli
• Spicy asian cucumber salad for one

With the roasted vegetable dishes (I know there are a lot of them - I'm obsessed!), you can absolutely go ahead and throw the pans in with the salmon and let them cook at that low temperature. When you remove the salmon, check the vegetables, increase the heat and then let them keep cooking for a few minutes until they are caramelized to your liking.

For a wonderful main salad dish, add this salmon to:

• Greek salad with marinated feta
• Kale ceaser salad
• Steak and cherry arugula salad (great dish for one - replace steak with salmon!)
• Salmon Niçoise salad

And of course you can use slow-baked salmon for tacos, wraps and more!

Print