
This vibrant Lemon Garlic Tilapia with Green Beans delivers the perfect balance of bright citrus and savory flavors in a quick one-pan meal. The delicate fish pairs beautifully with crisp green beans, all enveloped in a luscious garlic butter sauce that will transport you to a seaside dinner even on the busiest weeknight.
I created this recipe during a particularly hot summer when I wanted something light yet satisfying. My family now requests it regularly, especially when we need a break from heavier meals but still want something that feels special.
Ingredients
- Fresh or frozen tilapia fillets: the mild flavor makes them perfect for absorbing the bright lemon garlic sauce
- Fresh green beans: their crisp texture complements the delicate fish perfectly
- Unsalted butter: creates a silky sauce base – choose European style for extra richness
- Fresh garlic cloves: the aromatic foundation of the dish – look for firm bulbs with tight skin
- Whole lemon: both juice and slices add brightness – choose heavy fruits with thin skins for more juice
- Olive oil: helps achieve a beautiful sear on the fish – use extra virgin for best flavor
- Chicken broth or white wine: adds depth to the sauce – opt for low sodium broth to control saltiness
- Red pepper flakes: provides a gentle warmth – adjust according to your spice preference
- Fresh parsley or dill: adds color and freshness – clip from your garden if possible
Step-by-Step Instructions
- Prepare the Ingredients:
- Season the patted dry tilapia fillets generously with salt and pepper on both sides. This crucial step ensures flavor penetration and helps achieve a beautiful golden crust. While preparing the fish, trim the green beans and mince the garlic. The preparation should take no more than 10 minutes but sets you up for success throughout the cooking process.
- Cook the Green Beans:
- Heat olive oil in a large skillet over medium high heat until it shimmers. Add green beans with a pinch of salt and pepper, sautéing for about 5 minutes until bright green and crisp tender. The beans should still have a slight bite to them as they will continue cooking later. Transfer to a plate and set aside.
- Sear the Tilapia:
- Add remaining olive oil and butter to the same skillet over medium high heat. Once the butter foams, carefully place the seasoned tilapia in the hot pan without overcrowding. Let the fillets cook undisturbed for 2 to 3 minutes until a golden crust forms, then gently flip and sear the other side. The fish should release easily from the pan when properly seared. Remove to the plate with the green beans.
- Create the Lemon Garlic Sauce:
- Reduce heat to medium low and add remaining butter to the pan. Once melted, add minced garlic and optional red pepper flakes, cooking for just 30 to 60 seconds until fragrant but not browned. Pour in chicken broth or wine and fresh lemon juice, scraping the bottom of the pan to incorporate all the flavorful browned bits. Let the sauce simmer for 1 to 2 minutes until slightly reduced and thickened.
- Finish the Dish:
- Return the seared tilapia and green beans to the skillet, nestling lemon slices around and on top of the fish. Spoon some of the sauce over everything and cover the skillet or tent with foil. Allow to simmer gently for 3 to 5 minutes until the fish flakes easily with a fork and reaches an internal temperature of 145°F. The covered cooking creates a gentle steam bath that perfectly finishes the fish while infusing it with the sauce flavors.

Lemon is my favorite ingredient in this dish because it brings such brightness to the delicate fish. The first time I made this recipe, my daughter who typically avoids seafood cleaned her plate and asked for seconds. Nothing makes a home cook happier than watching someone discover a new food they love.
Make Ahead Options
While this dish is best enjoyed fresh from the pan, you can prep components ahead of time to streamline your cooking process. Clean and trim green beans up to two days in advance, storing them in a sealed container with a paper towel to absorb moisture. You can also mince garlic and slice lemons the morning of cooking. However, I recommend seasoning the fish just before cooking for the best texture and flavor results.
Perfect Pairings
This light and flavorful dish pairs wonderfully with simple sides that complement rather than compete with the delicate flavors. Try serving it with steamed rice or crusty bread to soak up the delicious sauce. For a lower carb option, cauliflower rice works beautifully. A crisp white wine like Sauvignon Blanc or Pinot Grigio makes this weeknight meal feel like a special occasion.
Simple Substitutions
This recipe welcomes adaptations based on what you have available. Swap green beans for asparagus or broccoli florets with similar cooking times. No fresh garlic? Use 1 teaspoon granulated garlic added to the sauce instead. Dairy free diners can replace butter with additional olive oil or a plant based butter alternative. The recipe maintains its essence even with these modifications, making it incredibly versatile for different dietary needs.
Recipe FAQs
- → Can I use a different type of fish for this dish?
Absolutely! While tilapia works beautifully because of its mild flavor and quick cooking time, you can substitute other white fish fillets like cod, sole, flounder, or snapper. Just adjust the cooking time based on the thickness of your fillets - thicker cuts may need a few extra minutes.
- → How do I know when the tilapia is fully cooked?
Tilapia is cooked when it turns opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C). Be careful not to overcook, as tilapia can become dry. When you can gently press a fork into the thickest part and it breaks into flakes with little resistance, it's ready.
- → Can I make this dish dairy-free?
Yes, you can substitute the butter with olive oil or a plant-based butter alternative. The flavor profile will be slightly different but still delicious. You might add a bit more lemon juice to compensate for the richness that butter provides.
- → What sides pair well with this lemon garlic tilapia?
While this dish already includes green beans, you might add a starchy side like roasted baby potatoes, steamed rice, quinoa, or crusty bread to soak up the delicious sauce. A simple side salad with a light vinaigrette would also complement the meal nicely.
- → Can I prepare any components of this dish ahead of time?
You can trim the green beans, mince the garlic, and slice the lemons up to a day in advance. Store them in separate containers in the refrigerator. However, the fish is best cooked just before serving for optimal texture and flavor. The entire dish comes together quickly once prep is complete.
- → How spicy is this dish with the red pepper flakes?
With ¼ teaspoon of red pepper flakes, the dish has just a subtle warmth rather than significant heat. The spice is balanced by the butter and lemon. If you're sensitive to spice, you can omit the red pepper flakes entirely or reduce the amount. If you enjoy heat, feel free to increase the quantity.