Slow cooker tilapia is a juicy, flaky, hands-off fish dinner made with just butter, lemon, and a couple minutes of prep. It is one of the easiest ways to cook tilapia without babysitting the stove. Cooking fish in the slow cooker is a little different, since the goal is to keep it from overcooking, but the gentle heat also frees you up to do something else while dinner cooks. This step-by-step slow cooker tilapia recipe shows you how to get tender, flavorful fish every time, with an oven option if you want it faster. It is inexpensive, healthy, and family-friendly. If you like easy fish dinners, my whole catfish baked in foil is another simple favorite.
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This recipe was first published here on December 11, 2019, and has since been updated with new tips and helpful information.
My take on this recipe
Cooking fish in a slow cooker sounded strange to me at first, but it has become my go-to trick for tilapia that never dries out. Tilapia is so lean that it overcooks in the blink of an eye on the stove, and the slow cooker's gentle heat gives me a little more room for error. I still check it toward the end, because even here you do not want to walk away for too long.
Quick note: Lay tilapia fillets in the slow cooker, top with butter, lemon slices, salt, and pepper, and cook on High for about 1 hour 30 minutes, until the fish flakes easily. It also bakes in about 15 minutes at 400°F.
Is tilapia a healthy fish?
Tilapia is a lean, mild white fish that is low in fat, high in protein, and naturally low in carbs, which makes it a great everyday choice. It is also one of the most affordable fish out there and easy to find in almost any grocery store.
Because it has so little fat, tilapia is easy to overcook and turn dry or rubbery. The trick is to cook it gently and pull it the moment it flakes, which is exactly what the slow cooker helps with.
Do you have to thaw tilapia before cooking?
Yes, thaw it first. Cooking most fish from frozen releases a lot of water that can water down and ruin the dish. Thaw the fillets completely, then pat them dry with a paper towel before they go in the slow cooker.
What goes well with tilapia?
This lemony fish is light and mild, so it pairs with almost any simple side. Try it with an easy cauliflower rice to soak up the buttery lemon juices.
- Sauteed vegetables or a green salad
- Zucchini or carrot noodles
- Steamed rice or a grain bowl
- Roasted potatoes or crusty bread
- A squeeze of extra lemon and fresh parsley
- Tucked into a bun for an easy fish sandwich
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Tips for the best slow cooker tilapia
Cook on High. Set the slow cooker to High for about 1 hour 30 minutes, and start checking toward the end so the fish does not overcook.
Thaw and pat dry. Frozen fish releases water as it cooks, so thaw the fillets fully and blot them dry before seasoning.
Do not overcook. Tilapia is very lean and goes from tender to rubbery fast. Pull it the moment it flakes easily with a fork.
Use lots of lemon and butter. They keep the lean fish moist and add all the flavor, so do not be shy with either.
Common questions
Cook it on High for about 1 hour 30 minutes. Because tilapia is so lean, High and a shorter time works better than a long, low cook.
Yes. Place the seasoned fillets on a lined baking sheet and bake at 400°F for about 15 minutes, until the fish flakes easily.
Thaw it first for the best texture. Frozen fish releases extra water that can make the dish watery, so pat the thawed fillets dry before cooking.
Cod, catfish, or any mild white fish work well with the same butter-and-lemon method. Adjust the time slightly for thicker fillets.
Storing and reheating
Store leftover tilapia in an airtight container in the fridge for up to 3 days.
Reheat gently in a 300°F oven or the microwave at low power, just until warm, so the lean fish does not dry out.
More tilapia recipes
- Trader Joe's Breaded Tilapia in the Air Fryer, crispy breaded fillets ready in under 15 minutes.
- Whole Baked Red Tilapia, a whole roasted tilapia with lemon.
- Air fryer frozen tilapia
More seafood recipes to try
- Ninja Crispi Mahi Mahi with Asparagus, flaky fish and tender veggies in one container.
- Baked Northern Pike, a simple baked freshwater fish.
- Halibut Cheeks, tender, sweet cheeks pan seared with lemon.
- Grouper Ceviche, a fresh, citrusy no-cook starter.
- Steamed Snow Crab Legs, an easy special-occasion main.
I hope this slow cooker tilapia becomes an easy weeknight go-to. If you make it, leave a rating and a comment below to let me know how it turned out!
Recipe
Slow Cooker Tilapia with Lemon
Ingredients
- 4 tilapia fillets thawed and patted dry
- 1 lemon sliced
- 2 tablespoons unsalted butter
- ½ teaspoon salt
- Pinch of black pepper
Instructions
Slow cooker method
- Lay the 4 tilapia fillets in the bottom of the slow cooker.
- Top the fillets with the 2 tablespoons butter and the slices from the 1 lemon, then sprinkle with the ½ teaspoon salt and a pinch of black pepper.
- Cover and cook on High for 1 hour 30 minutes, until the fish is opaque and flakes easily with a fork.
Oven method
- Place the seasoned fillets on a lined baking sheet, topped with the butter and lemon.
- Bake at 400°F for about 15 minutes, until the fish flakes easily.
Dwayne York
Is this on low or high in the crock pot?
Tanya
Please cook on high
Carol
Do you cook the white fish on high in slow cooker?
Tracey Barnes
This recipe also works quite well in the oven for about 15 minutes at 400°.