When you need a healthy, high-protein weeknight dinner in under 20 minutes, Lemon Pepper Salmon with Roasted Green Beans delivers exceptional flavor with effortless sheet-pan prep. Flaky salmon fillets are coated in zesty lemon pepper butter and roasted on a single sheet pan alongside crisp, blistered green beans tossed with garlic and olive oil.
The secret to perfectly roasted salmon alongside crisp green beans is Roasting at High Heat (400°F / 200°C) and Pre-Tossing the Green Beans in Olive Oil So They Blister Quickly. High-heat roasting cooks the salmon until it flakes delicately with a fork while blistering the green beans to a tender-crisp texture without getting soggy.
Why You’ll Love This Sheet-Pan Meal
- Under 20 Minutes Total: Minimal prep and quick high-heat roasting get dinner on the table in record time.
- Effortless One-Pan Cleanup: The salmon and vegetable side dish cook side-by-side on one parchment-lined sheet pan.
- Nutrient-Dense Powerhouse: Loaded with healthy omega-3 fatty acids, high-quality lean protein, and fiber.
- Naturally Low-Carb & Keto: A delicious, wholesome meal that fits easily into gluten-free, low-carb, and keto lifestyle plans.
Key Ingredients Overview
- Salmon Fillets: 4 skin-on center-cut salmon fillets (about 6 oz each).
- Green Beans: 1 lb fresh green beans, ends trimmed.
- Lemon Pepper Butter Paste: Softened unsalted butter (or extra virgin olive oil), fresh lemon zest, fresh lemon juice, lemon pepper seasoning blend, and minced garlic.
- Aromatics & Finishing: Extra virgin olive oil, sea salt, freshly cracked black pepper, fresh parsley, and fresh lemon slices.
Step-by-Step Instructions
1.Prep Oven & Sheet Pan:3 min.
Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper or heavy-duty aluminum foil.
2.Mix Lemon Pepper Butter & Season Beans:3 min.
In a small bowl, mash together 3 tablespoons softened unsalted butter (or olive oil), 2 minced garlic cloves, 1½ teaspoons lemon pepper seasoning, 1 teaspoon lemon zest, 1 tablespoon fresh lemon juice, and ½ teaspoon salt. Trim 1 lb fresh green beans and toss them directly on one side of the sheet pan with 1 tablespoon olive oil, ¼ teaspoon salt, and ¼ teaspoon black pepper.
3.Arrange & Coat Salmon:2 min.
Pat 4 salmon fillets dry with paper towels and place them skin-side down on the empty side of the baking sheet. Spread the lemon pepper butter paste evenly over the top of each fillet. Top each fillet with a fresh lemon slice.
4.Roast at High Heat:12 min.
Roast at 400°F (200°C) for 12 to 15 minutes, until the salmon flakes easily with a fork (145°F / 63°C internal temperature) and the green beans are tender with blistered, caramelized edges.
5.Garnish & Serve Hot:1 min.
Remove from the oven, squeeze fresh lemon juice over the salmon and green beans, sprinkle with chopped fresh parsley, and serve immediately!

Expert Tips for Success
- Pat Salmon Dry Thoroughly: Removing surface moisture from raw salmon ensures the herb butter sticks and allows the fish to roast rather than steam.
- Use Fresh Green Beans: Fresh, snap-trimmed green beans deliver the best blistered texture. If using frozen green beans, thaw and dry them thoroughly before tossing in oil.
- Adjust Salt Based on Seasoning: Many store-bought lemon pepper blends contain added salt. Check your seasoning label before adding extra salt to the butter mixture!
The Recipe Card
- Prep Time: 5 mins
- Cook Time: 15 mins
- Total Time: 20 mins
- Yield: 4 Servings
Ingredients:
- 4 Salmon Fillets (6 oz each, skin-on)
- 1 lb Fresh Green Beans (trimmed)
- 3 tbsp Unsalted Butter (softened) or Olive Oil
- 2 Garlic Cloves (minced)
- 1½ tsp Lemon Pepper Seasoning
- 1 tsp Fresh Lemon Zest & 1 tbsp Fresh Lemon Juice
- 1 tbsp Extra Virgin Olive Oil (for green beans)
- ¾ tsp Salt & ½ tsp Black Pepper (divided)
- Fresh Parsley & Lemon Slices for garnish
Instructions:
Preheat oven to 400°F (200°C) and line a sheet pan. Mash softened butter, garlic, lemon pepper seasoning, lemon zest, lemon juice, and ½ tsp salt into a paste. Toss green beans with 1 tbsp olive oil, ¼ tsp salt, and ¼ tsp pepper on one side of the pan. Place salmon fillets skin-side down on the other side and coat with lemon pepper butter. Bake for 12–15 minutes until salmon flakes easily. Garnish with parsley and fresh lemon juice, then serve!