Grilled Lemon Shrimp Foil Packets

Make the best grilled lemon shrimp foil packets tonight — buttery garlic sauce, fresh asparagus, and zero cleanup. This is the summer dinner recipe you’ll keep coming back to all season.

Grilled lemon shrimp foil packets are a quick, no-mess dinner made by sealing jumbo shrimp and asparagus in foil with a lemon garlic butter sauce, then grilling until tender and fragrant.

This recipe serves 3, delivers juicy, garlicky shrimp with a bright citrus finish and crisp-tender asparagus, and is perfect for summer patio dinners, easy family meals, or any night you want big flavor with almost no effort.

I’ll be honest — the first time I made these, I didn’t double-fold the foil ends and the butter sauce leaked straight onto the grill grates. The shrimp were still good, but I lost half the sauce. That double fold step isn’t optional.

Why You’ll Love These Grilled Lemon Shrimp Foil Packets

The lemon garlic butter sauce soaks into every shrimp and asparagus spear while it grills — you get this rich, tangy, slightly spicy result without doing much at all.

There’s no pan to scrub, no foil to soak, no mess. The packets do everything. It takes under 30 minutes start to finish, and the whole thing scales easily for a crowd.

It’s also one of the most flexible grilling recipes out there. Swap the asparagus, dial up the heat, skip the red pepper — it works every time.

What Ingredients Do You Need for Grilled Lemon Shrimp Foil Packets?

Ingredient Group	Ingredient	Amount	Notes
Main	Jumbo shrimp, peeled and deveined, tails on	1.5 lb	Size 13–15, 16–20, or 12–18
Main	Asparagus spears, trimmed	1 lb	Ends snapped off
Main	Reynolds Wrap Heavy Duty Foil	3 pieces, 16–18 inches each	Heavy duty only
Lemon Garlic Butter Sauce	Salted butter	6 tbsp	Softened, not melted
Lemon Garlic Butter Sauce	Lemon juice	2 tbsp	Fresh squeezed
Lemon Garlic Butter Sauce	Garlic, minced	8 cloves	Fresh only
Lemon Garlic Butter Sauce	Old Bay Seasoning	1/2 tsp	Plus more for serving
Lemon Garlic Butter Sauce	Red pepper flakes	1/2 tsp	Adjust to taste
Lemon Garlic Butter Sauce	Black pepper	1/8 tsp	Freshly cracked preferred
Lemon Garlic Butter Sauce	Sea salt	1/4 tsp	Optional, to taste
Lemon Garlic Butter Sauce	Fresh parsley, chopped	2 tbsp	Plus more for serving

Jumbo shrimp in the 13–15 or 16–20 count range hold up best on the grill — smaller shrimp overcook too fast inside the foil. Keep the tails on for presentation and to help protect the tail end from toughening up.

Heavy duty foil is the non-negotiable here. Standard foil tears when you fold the seams and leaks that gorgeous lemon garlic butter sauce. Reynolds Wrap Heavy Duty is worth it every time.

Old Bay is doing a lot of work in that butter sauce — it brings a savory, slightly spiced backbone that pairs naturally with the lemon and garlic. Don’t skip it, and don’t be shy about adding more before serving.

How to Make Grilled Lemon Shrimp Foil Packets Step by Step

Prep the Grill and Foil

1. Preheat your grill to medium-high heat, targeting 425 degrees.
2. Tear three pieces of Reynolds Wrap Heavy Duty Foil, each 16 to 18 inches long.

Build the Packets

3. Divide the shrimp and trimmed asparagus evenly between the centers of the three foil pieces.
4. Soften the butter in the microwave for 15 to 20 seconds until mixable but not bubbly hot.
5. Mix all spices, garlic, lemon juice, and parsley into the softened butter until fully combined.
6. Divide the lemon garlic butter sauce evenly over the shrimp and asparagus in each packet.

Pro Tip: The key to an even cook is making sure the sauce is fully stirred before dividing — garlic sinks fast, so the last packet can end up with almost none if you don’t mix between spoonfuls.

Seal and Grill

7. Bring up the long sides of each foil piece so the ends meet over the food.
8. Double fold the long ends, leaving room for heat to circulate inside the packet.
9. Double fold both short ends of each packet to seal completely.
10. Use a long spatula to transfer the packets onto the preheated grill.

Pro Tip: For best results, place packets seam-side up on the grill — this keeps the sauce pooled around the shrimp and asparagus rather than running off to the sides.

Rest and Serve

11. Grill the packets until the shrimp are cooked through and the asparagus is tender.
12. Remove from the grill and let rest for 1 to 2 minutes before opening.
13. Top with additional Old Bay, lemon juice, red pepper flakes, and fresh parsley before serving.

Pro Tip: The most common mistake is opening the packets immediately off the grill — that 1 to 2 minute rest lets the steam redistribute and the sauce thicken slightly around the shrimp.

Expert Tips for Perfect Grilled Lemon Shrimp Foil Packets

Pro Tips for Success

Use heavy duty foil only. Regular foil tears at the folds and the butter sauce escapes onto the grill. Heavy duty foil holds the double-folded seams without tearing and keeps all that lemon garlic flavor locked inside with the shrimp.

The key to juicy shrimp is not overcooking them. Shrimp go from perfectly tender to rubbery fast — especially at 425 degrees inside a sealed foil packet. Pull them when they’re just opaque and pink. They’ll finish in the resting period.

For best results, soften the butter rather than melting it completely. Mixable, softened butter coats the garlic and spices evenly. Melted butter separates and the seasoning sinks to the bottom of the packet instead of clinging to the shrimp and asparagus.

Grilled lemon shrimp foil packets work best when you leave room inside the packet for steam. Don’t press the foil flat against the food — that trapped heat is what cooks everything evenly without drying it out.

Taste and finish aggressively before serving. That final hit of Old Bay, fresh lemon juice, and parsley right before serving makes a real difference. The foil cooking concentrates the flavors, but a bright finishing squeeze of lemon wakes everything back up.

Delicious Variations

Spicy Version: Double the red pepper flakes and add a pinch of cayenne to the butter sauce. It builds real heat without covering the lemon garlic flavor — great for anyone who likes their summer grilling recipes with a serious kick.

Low-Carb Version: Swap the asparagus for zucchini rounds, broccoli florets, or bell pepper strips. All three hold up well in foil and absorb the lemon garlic butter sauce beautifully. Keeps the whole packet naturally low in carbs without changing the method at all.

Herb Butter Version: Add a teaspoon of fresh thyme or rosemary to the butter sauce alongside the parsley. It adds a warm, earthy depth that makes the dish feel more like a patio dinner recipe for guests than a quick weeknight dinner.

Troubleshooting Common Problems

Problem: Shrimp came out rubbery and overcooked.

Solution: Reduce grill time and pull packets earlier. At 425 degrees, jumbo shrimp in a sealed foil packet cook quickly. Check at the shorter end of cook time and rely on the resting period to finish them.

Problem: The butter sauce leaked out during grilling.

Solution: Standard foil and single-folded seams are the culprit. Use heavy duty foil only, and always double fold both the long seam and both short ends. The folds need to be tight and deliberate, not just loosely crimped.

Problem: Asparagus turned out mushy.

Solution: Use medium to thick asparagus spears, not thin ones. Thin asparagus overcooks inside the foil before the shrimp is done. Thicker spears stay crisp-tender at the same pace the shrimp finish cooking.

How to Store and Reheat Grilled Lemon Shrimp Foil Packets

Storage Method	Duration	Best Practice
Room Temperature	Up to 2 hours	Keep packets sealed; discard after 2 hours out
Refrigerator	Up to 3 days	Store in airtight container; reheat gently
Freezer	Not recommended	Shrimp and asparagus both lose texture when frozen

To reheat, add the leftover shrimp and asparagus to a covered skillet over low heat with a small splash of water or extra lemon juice. Two to three minutes is all it takes — you want warm and tender, not cooked a second time.

Avoid the microwave if you can. It makes the shrimp rubbery fast. The skillet method keeps them closer to that fresh-off-the-grill texture.

Leftovers are excellent the next day over rice, tossed into a pasta with extra lemon butter, or chopped and folded into a quick grain bowl. The lemon garlic flavor actually deepens overnight. Don’t freeze — shrimp and asparagus both turn watery and soft, and it’s not worth eating.

FAQs About Grilled Lemon Shrimp Foil Packets

Save This Recipe Before You Head to the Grill

Seriously — these grilled lemon shrimp foil packets are the kind of recipe that shows up at every cookout from June through September once you make them once.

Pin this so you can find it when you need a fast, impressive dinner idea that cleans itself up. And if you make it, I want to hear about it — drop a comment below and tell me if you went spicy, swapped the vegetables, or added that extra Old Bay finish.

If you’re building out your summer spread, my easy elote dip and smoky corn dip are both crowd favorites that take minutes to pull together alongside these packets.

Grilled lemon shrimp foil packets — buttery, garlicky, bright with lemon, and done in under 30 minutes. Save this one. You’ll use it all summer.