When you’re craving something light, comforting, and homemade—but don’t want a long list of ingredients—this 2-Ingredient Slow Cooker Lemon Butter Fish is the answer. With just fish and lemon butter, this recipe delivers tender, flaky results with almost no prep. It’s a gentle, hands-off meal that feels fresh and satisfying, even on the busiest nights.
This recipe is perfect for anyone who loves simple cooking, easy cleanup, and flavorful meals without extra effort. Whether you’re new to slow cooking or just want a reliable go-to dinner, this lemon butter fish proves that less really can be more.
Why You’ll Love This Recipe
- Only 2 ingredients
- Light, fresh lemon-butter flavor
- No chopping, seasoning, or prep work
- Perfect for busy weeknights
- Gentle slow cooking keeps fish tender
If you’re searching for easy fish dinners, slow cooker seafood recipes, or minimalist meals, this recipe checks all the boxes. It’s also a great option when you want something comforting without feeling heavy.
Ingredients
You’ll need just two simple ingredients:
- 1½–2 lbs white fish fillets
(cod, tilapia, haddock, or pollock work best) - ½–¾ cup lemon butter sauce
(store-bought or melted lemon butter)
That’s it. No additional seasonings are required—the lemon butter provides all the flavor.
How to Make 2-Ingredient Slow Cooker Lemon Butter Fish
This recipe is as easy as it gets. No browning, no marinating, and no extra steps.
Step 1: Add the Fish
Place the uncooked fish fillets into the slow cooker in a single layer. If necessary, slightly overlap them, but avoid stacking too much to ensure even cooking.
Step 2: Add Lemon Butter
Pour the lemon butter sauce evenly over the fish, making sure each piece is lightly coated. The sauce will melt and gently infuse the fish as it cooks.
Step 3: Slow Cook
Cover and cook:
- On Low for 1½–2 hours, or
- On High for 45–60 minutes
Fish cooks quickly, so check early to avoid overcooking. The fish is done when it flakes easily with a fork.
Step 4: Serve
Carefully lift the fish out using a spatula. Spoon extra lemon butter sauce from the slow cooker over the top before serving.
What Type of Fish Works Best?
For best results, use firm white fish fillets. These hold their shape well while cooking and stay tender without falling apart.
Great options include:
- Cod
- Haddock
- Tilapia
- Pollock
Avoid very thin or delicate fish, as they may overcook quickly in the slow cooker. Thicker fillets work best for this gentle cooking method.
Why Use a Slow Cooker for Fish?
Many people don’t think of using a slow cooker for fish, but it’s actually an excellent method when done correctly. The slow cooker provides moist, even heat, which helps prevent drying out.
The lemon butter creates a protective layer around the fish, keeping it soft, flaky, and full of flavor. This method is especially helpful if you’re nervous about cooking fish on the stovetop or in the oven.
Tips for Perfect Slow Cooker Lemon Butter Fish
- Do not overcook — fish needs less time than meat
- Keep the lid closed to retain moisture
- Use a liner or parchment for easy cleanup
- Serve immediately for best texture
Because fish is delicate, it’s better to check early and turn the slow cooker off once the fish is done.
Serving Ideas
This lemon butter fish pairs beautifully with simple sides, making it easy to turn into a complete meal.
Try serving it with:
- Steamed rice or quinoa
- Mashed or roasted potatoes
- Steamed broccoli or green beans
- A fresh side salad
The light lemon flavor works well with both vegetables and starches, making it a versatile main dish.
Storage & Reheating
Fish is best enjoyed fresh, but leftovers can still be stored carefully.
- Refrigerator: Store in an airtight container for up to 2 days
- Freezer: Not recommended, as the texture may change
- Reheating: Reheat gently in the microwave at low power or in a skillet over low heat
Avoid overheating, as this can dry out the fish.
Frequently Asked Questions
Can I use frozen fish?
Yes, but it’s best to thaw the fish completely first. This helps ensure even cooking and prevents excess liquid in the slow cooker.
Can I make this recipe in the oven?
Yes. Bake at 375°F (190°C) for 15–20 minutes, until the fish flakes easily.
Is this recipe kid-friendly?
Absolutely. The mild lemon butter flavor makes it appealing to both kids and adults.
Can I double the recipe?
Yes, as long as the fish fits in a single layer or only slightly overlaps. Avoid stacking too much.
Final Thoughts
This 2-Ingredient Slow Cooker Lemon Butter Fish is proof that easy cooking doesn’t have to mean boring food. With minimal effort and clean, comforting flavors, it’s a recipe you can rely on for busy nights when you still want something homemade.
If you love simple slow cooker meals, light seafood dinners, and recipes that don’t require a long grocery list, this one deserves a place in your regular rotation.