Slow Roasted Salmon with Horseradish Dill Sauce (Paleo, Keto, Whole30)

This Slow Roasted Salmon with Horseradish Dill Sauce recipe uses a few easy steps to produce a tasty main course for a delicious meal. It’s simple, elegant, and easy enough for a weeknight dinner.

There are about 1,347 different ways to prepare fresh salmon, but slow-roasting salmon just might be the most simple and stress-free technique.

(If you’ve ever broken into a cold sweat at the thought of making fish, this method might just be the best way to overcome your fears).

And when this tender, melt-in-your-mouth baked salmon is paired with a creamy sauce loaded with fresh dill and horseradish–truly one of my favorite flavor combinations–only good things happen.

Bold and beautiful, it’s the kind of sauce that pairs extremely well with a delicate salmon flavor.

What’s also great about this salmon dish is that it’s:

• Paleo
• Keto
• Whole30
• low carb
• dairy-free
• easy enough for a busy weeknight

And when it comes to healthy eating, it’s tough to beat salmon.

It’s loaded with protein and healthy fats, making it a great meal base for almost any type of diet.

Ingredients

For this simple salmon recipe you’ll need

• one whole skinless salmon fillet:
• extra virgin olive oil
• sea salt or kosher salt
• black pepper

And for the Horseradish Dill Sauce ingredients you’ll need:

• mayonnaise: make sure to use a keto and/or Whole30 compliant brand like Primal Kitchen.
• fresh horseradish root
• distilled white vinegar
• fresh dill
• sea salt and black pepper

The Benefits of Slow Roasting Salmon

Slow-roasting salmon (or any fish for that matter) is a simple and easy way to cook it to perfection.

Roasting salmon at an extremely low oven temperature ensures that the fish retains moisture and prevents it from drying out due to overcooking.

It really is an almost fool-proof technique that leaves plenty of wiggle room as far as the cooking time goes.

There’s not need to be glued to a kitchen timer, an extra few minutes in the oven won’t drastically change the results.

The Best Salmon Cut for Slow Roasting

For slow-roasting, a whole, skinless salmon fillet works best because a large, thick piece of fish benefits the most from the slow cooking process.

You can absolutely use a skin-on fillet with great results though. Smaller, individual salmon fillets will also work for slow-roasting, just shorten the cooking time accordingly.

How to Make Slow Roasted Salmon

Start by preheating your oven to 275° F.

Pat the salmon dry wit a paper towel, then place salmon skin side down on a parchment-lined baking sheet.

Rub some olive oil all over the fillet, then liberally season the top of the salmon with salt and pepper.

Transfer the baking sheet to the oven and roast the salmon for about 30 minutes.

Cooking time will vary depending on the thickness of the fillet, but once the salmon flakes apart easily with a fork, it’s done.

If you are a nerd like me, you can break out the kitchen thermometer. I like to shoot for a final internal temperature of 120°-125°F (note that the USDA recommends 145°F though).

How to Make Horseradish Dill Sauce

While the salmon is roasting, you can take the opportunity to make a quick and delish dairy-free horseradish dill sauce.

Start by peeling the woody skin and some of the tougher inner peel off the horseradish root (a vegetable peeler works great for this).

Finely grate the peeled horseradish root using a box grater.

Important Note: fresh horseradish is potent, so wearing some eye protection is recommended while grating it.

You’ll need about 1/4 cup of grated horseradish for the sauce, but feel free to add more for a bigger kick.

Combine the grated horseradish with 1/2 cup mayonnaise, fresh dill, and vinegar in a small bowl and mix well.

Season the sauce with a little sea salt and black pepper to taste, then store it in the refrigerator until you are ready to use it.

Serve the salmon with the horseradish sauce on top. You can serve this dish warm or at room temperature.

Store any leftover salmon and sauce in an airtight container in the refrigerator for up to 3 days.

What to Serve with Slow-Roasted Salmon

For a complete meal serve this salmon with:

• pan fried asparagus
• a simple side salad with lemon wedges
• air fryer brussel sprouts

More Delicious Salmon Recipes:

• Salmon Stuffed Avocados
• Salmon Cucumber Rolls
• Warm Salmon Potato Salad

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