Slow Cooker Lemon Dill Salmon

March 4, 2025

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Salmon in the slow cooker may sound odd, but it is one of the most foolproof ways to cook it. This slow cooker lemon dill salmon gently steams over lemon slices and broth, with butter, garlic, and dill on top. It comes out tender, flaky, and moist.

Prep takes about 15 minutes, and it cooks on low for 1.5 to 2 hours. That makes it great for a weekend dinner or when you have guests and want the stove free. Serve it with roasted potatoes, rice, or a crisp salad.

Why This Slow Cooker Salmon Works

Gentle heat. Low, moist heat cooks the fish slowly, so it is hard to dry out.
Lemon on both sides. Lemon slices under and over the salmon keep it from sticking and add bright flavor.
Broth adds steam. Half a cup of broth creates a little steam bath that keeps the fish juicy.
Simple flavors. Butter, garlic, and dill are a classic match for salmon.

Ingredients and Easy Swaps

You need a 2 pound skin-on salmon fillet, 1 thinly sliced lemon, and 2 tablespoons of chopped fresh dill (or 2 teaspoons dried). Add 2 tablespoons of melted unsalted butter, half a cup of vegetable or chicken broth, 2 cloves of minced garlic, salt, and pepper. A little cooking spray or olive oil greases the slow cooker.

Salmon: Individual fillets work too. Check them 15 to 20 minutes early since smaller pieces cook faster.
Broth: Dry white wine or water with a splash of lemon juice work in its place.
Dill: Parsley, chives, or tarragon also pair well with lemon.
Butter: Olive oil keeps it dairy-free.

How to Make It at a Glance

Grease the slow cooker. Pour in the broth and lay half the lemon slices on the bottom.
Set the salmon on top, skin side down.
Drizzle with melted butter and sprinkle with salt, pepper, garlic, and dill.
Top with the rest of the lemon slices.
Cover and cook on low for 1.5 to 2 hours, until the fish flakes easily and reaches 145°F.
Lift it out with a wide spatula, remove the top lemon slices, and serve.

The full recipe card is below. Check the salmon at the 90 minute mark. Thicker fillets may need the full 2 hours.

Tip: Make a Foil Sling

A large salmon fillet can break apart when you lift it out. To make this easy, fold a long sheet of foil or parchment into a strip and lay it across the bottom of the slow cooker with the ends hanging over the sides. Add the broth, lemon, and salmon on top. When the fish is done, grab both ends and lift the whole fillet out in one piece. It works like a handle and keeps the salmon looking nice for serving.

How to Pick Salmon at the Store

Look for a fillet that is bright in color, firm to the touch, and smells fresh and mild, not fishy. A center-cut piece has an even thickness, so it cooks at the same rate from end to end. Atlantic salmon is mild and rich. Wild sockeye or coho is leaner and deeper in color, so check it a little earlier. Frozen salmon from the freezer case is a good, budget-friendly option. Just thaw it in the fridge before cooking. Ask the fish counter to remove the pin bones if you want to save a step.

Common Mistakes to Avoid

Cooking on high. High heat cooks the edges too fast and dries them out. Stick with low.
Leaving it too long. This is not an all-day recipe. Salmon overcooks if left for hours, so set a timer.
Too small a slow cooker. The fillet should lie flat. An oval 6 quart cooker works best.
Skipping the lemon base. Without it, the skin can stick to the bottom.

Variations

Honey garlic: Brush the salmon with honey mixed with soy sauce and garlic in place of the dill.
Herb butter: Mix the butter with parsley, chives, and lemon zest before drizzling.
Mediterranean: Add capers, cherry tomatoes, and olives around the fish.
Spicy: Sprinkle on red pepper flakes or a little smoked paprika.

What to Serve With It

Roasted baby potatoes, garlic rice, or quinoa make a good base. For vegetables, try roasted asparagus, green beans, or a cucumber and tomato salad. A spoonful of tartar sauce or a simple yogurt dill sauce on the side adds creaminess.

Storage and Reheating

Store leftover salmon in a covered container in the fridge for up to 3 days. Reheat gently in a 275°F oven, covered with foil, until warmed through, or eat it cold. Cold leftover salmon is great flaked over salads, tossed with pasta, or mixed into rice bowls. Reheating it in the microwave can dry it out, so use short bursts at low power if you go that route.

Slow Cooker Salmon FAQ

How do I know when salmon is done?
It turns from translucent to opaque and flakes easily with a fork. The thickest part should reach 145°F on a thermometer.

Can I use frozen salmon?
Thaw it in the fridge overnight first. Frozen fish cooks unevenly in a slow cooker.

Do I eat the skin?
You can, but in the slow cooker it will be soft, not crispy. It slides off easily after cooking if you prefer to remove it.

Can I add vegetables?
Quick-cooking vegetables like asparagus or sliced zucchini can go in for the last 30 minutes.