3-Ingredient Lemon Butter Salmon Foil Packets with Asparagus

Quick Recipe Version (TL;DR)

• Yield: 2 servings
• Prep Time: 10 minutes
• Cook Time: 16 minutes
• Total Time: 26 minutes

Quick Ingredients

• 2 salmon fillets (6 oz each, about 1 inch thick)
• 1 medium lemon, thinly sliced (about 8 slices)
• 2 tablespoons unsalted butter (or 2 tablespoons basil pesto)
• 12 oz asparagus (trimmed) or 12 oz green beans (trimmed)
• 1 (8.8 oz / 250 g) pouch microwaveable rice (about 2 cups cooked)
• Optional: 1/2 teaspoon kosher salt, 1/4 teaspoon black pepper

Do This

• 1. Heat oven to 400°F (204°C). Place a rimmed baking sheet in the middle of the oven while it heats (optional but helps).
• 2. Lay out 2 large sheets of foil (about 18 inches each). Divide asparagus/green beans between the centers.
• 3. Set salmon on top. Add salt/pepper (optional), top with lemon slices and 1 tablespoon butter (or pesto) per fillet.
• 4. Seal into tight packets, leaving a little air space for steam. Place packets on the baking sheet.
• 5. Bake 14–18 minutes, until salmon flakes easily and is steamy-hot inside.
• 6. Microwave rice according to package directions (typically 90 seconds). Rest packets 2 minutes, then open carefully.
• 7. Serve salmon and veggies over rice, spooning any lemon-butter juices from the foil over everything.

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Why You’ll Love This Recipe

• Minimal cleanup: everything cooks in tidy foil packets on one pan.
• Reliable and forgiving: the steam keeps salmon moist and tender.
• Dinner in under 30 minutes: while the packets bake, the rice heats in the microwave.
• Flexible: use butter for classic lemony richness or pesto for a herby shortcut.

Grocery List

• Produce: 1 lemon, 12 oz asparagus or 12 oz green beans
• Dairy: unsalted butter (or substitute basil pesto)
• Pantry: microwaveable rice pouch; optional kosher salt, black pepper

Full Ingredients

For the Salmon Packets (the “3-ingredient” core)

• 2 salmon fillets, skin-on or skinless (6 oz each; about 1 inch thick)
• 1 medium lemon, thinly sliced (about 8 slices)
• 2 tablespoons unsalted butter, cut into 2 pieces (1 tablespoon per packet) or 2 tablespoons basil pesto (1 tablespoon per packet)

For the Vegetables

• 12 oz asparagus, woody ends trimmed (about 20–24 medium spears) or 12 oz green beans, trimmed

For Serving

• 1 (8.8 oz / 250 g) pouch microwaveable rice (yields about 2 cups cooked)

Optional (but recommended) Pantry Staples

• 1/2 teaspoon kosher salt (about 1/4 teaspoon per fillet, plus a pinch for the vegetables)
• 1/4 teaspoon freshly ground black pepper

Step-by-Step Instructions

Step 1: Heat the oven and prep your pan

Preheat the oven to 400°F (204°C). Set a rack in the middle position. Line a rimmed baking sheet with foil or parchment for extra-easy cleanup (optional). The baking sheet makes it easy to move the packets in and out of the oven without spilling.

Step 2: Prep the foil and divide the vegetables

Tear off 2 sheets of heavy-duty aluminum foil, each about 18 inches long. If you only have regular foil, use a double layer for each packet to prevent leaks.

Place the foil sheets on your counter. Divide the asparagus (or green beans) between the centers of the foil sheets, making a bed for the salmon. If using salt and pepper, sprinkle a small pinch of salt and pepper over the vegetables.

Step 3: Add the salmon, lemon, and butter (or pesto)

Place one salmon fillet on top of each pile of vegetables. If using salt and pepper, season each fillet with about 1/4 teaspoon kosher salt and a pinch of black pepper.

Layer 3–4 thin lemon slices over each salmon fillet. Top each with 1 tablespoon butter (a single pat) or 1 tablespoon pesto. The lemon and butter/pesto will melt into a quick sauce as the packet steams.

Step 4: Seal the packets tightly

Bring the long sides of the foil up and over the salmon, then fold them together several times to seal. Fold in the short ends like a present, sealing well so steam stays trapped inside.

Leave a little headspace above the salmon (a small “tent” of foil) so steam can circulate. Place the packets seam-side up on the baking sheet.

Step 5: Bake until steamy and flaky

Bake at 400°F (204°C) for 14–18 minutes, depending on the thickness of your salmon and how cold it is when it goes into the oven. The packet should look slightly puffed, and you’ll hear/feel steam when you press gently on the top.

For doneness, carefully open one packet (watch for hot steam). The salmon should flake easily with a fork. If you use an instant-read thermometer inserted into the thickest part, aim for:

• 125°F–130°F (52°C–54°C): moist, tender, medium
• 145°F (63°C): fully cooked per USDA guidance

If it needs more time, reseal and bake 2 more minutes, then check again.

Step 6: Microwave the rice while the salmon rests

Let the salmon packets rest for 2 minutes on the baking sheet (this helps the juices settle and finishes cooking gently).

Meanwhile, microwave the rice pouch according to package directions (typically 90 seconds). Fluff the rice with a fork once it’s hot.

Step 7: Serve and spoon over the packet juices

Open each packet carefully, keeping your face and hands away from the steam. Transfer rice to bowls or plates, then top with the asparagus/green beans and salmon. Spoon any lemon-butter (or lemon-pesto) juices from the foil over the salmon and rice like a sauce. Serve immediately.

Pro Tips

• Use thin lemon slices: they soften quickly and perfume the whole packet without turning bitter.
• Don’t crowd the vegetables: spread them into a single layer under the fish so they steam-tender evenly.
• Prevent leaks: double-wrap with regular foil, and keep the seam on top so juices stay inside.
• Thickness matters: a 3/4-inch fillet may be done closer to 14 minutes; a thick 1 1/2-inch fillet may need 18–20 minutes.
• Want extra browning? This method is steamy (not crisp). If you prefer a bit of color, open the packets and broil salmon on the sheet for 1–2 minutes, watching closely.

Variations

• Pesto packet: swap butter for 1 tablespoon basil pesto per fillet; add an extra lemon wedge for squeezing at the table.
• Spicy-citrus packet: keep butter, and add 1/4 teaspoon red pepper flakes per packet (optional) plus a pinch of salt.
• Different greens: use broccolini (10–12 oz) or sugar snap peas (10 oz). Keep pieces similar in size for even cooking.

Storage & Make-Ahead

Storage: Cool leftovers within 2 hours. Store salmon, vegetables, and rice in airtight containers in the refrigerator for up to 2 days.

Reheating: Reheat gently to avoid drying out the salmon. Microwave at 50% power in 30-second bursts until warmed through, or warm covered in a 300°F (149°C) oven for about 10–12 minutes.

Make-ahead: Trim vegetables and slice lemon up to 2 days ahead. Assemble packets up to 4 hours ahead and refrigerate; add 2–3 minutes to the bake time since the packets start colder.

Nutrition (per serving)

Approximate, per serving (made with butter and microwave rice): 650 calories, 38 g protein, 45 g carbohydrates, 33 g fat, 6 g fiber, 650 mg sodium (varies widely by rice brand and salt used).