Garlic Butter Steak & Shrimp with Creamy Mash – Easy One-Pan

Picture this: it's 7pm on a Tuesday, the fridge is doing its usual shrug, and you want something that feels like a white-tablecloth dinner without the white-tablecloth bill. Enter Garlic Butter Steak & Shrimp with Creamy Mash – the surf-and-turf fantasy that lives happily in one skillet and one pot.

Think of this recipe like a good rom-com: the steak is the confident lead, the shrimp is the charming co-star, and the garlic butter sauce is the scene-stealer everyone quotes afterward. The mash underneath is the soft-focus ending – creamy, buttery, and ready to soak up every drop.

You don't need perfect knife skills or a culinary degree. You need a hot pan, a timer, and a little nerve. Messy first attempts are how every great cook starts, so pour a glass of something cold and let's dance with a skillet.

About the Ingredients

2 lb (900g) Yukon Gold potatoes, peeled and cut into 1-inch chunks

Yukon Golds turn silky and buttery; russets work but get fluffier and starchier. Skip waxy red potatoes here – they stay gluey when mashed.

6 tbsp (85g) unsalted butter, divided

Split between the mash and the skillet so nothing tastes flat. Salted butter works – just reduce the added salt elsewhere.

1/2 cup (120ml) whole milk, warmed

Warm milk keeps the mash from seizing. Half-and-half makes it richer; oat milk is a fine dairy-free swap.

2 (1 lb / 450g total) New York strip steaks, about 1 inch thick

Ribeye is a juicier, fattier swap; sirloin is leaner and budget-friendly. Look for steaks with good marbling and a dry surface for searing.

1 lb (450g) large shrimp, peeled and deveined, tails on

Frozen shrimp thawed overnight in the fridge beats fresh for value. Pat them bone-dry – wet shrimp steam instead of sear.

6 cloves garlic, minced (about 2 tbsp)

Fresh garlic only here; jarred garlic burns faster and tastes sharper. A teaspoon of garlic paste is a decent shortcut.

1 tbsp olive oil

Use a high-smoke-point oil like avocado or canola for the steak. Save your fancy finishing olive oil for drizzling at the end.

1 tsp kosher salt, plus more for the potatoes

Kosher salt seasons more evenly than table salt. If using fine table salt, start with half and taste as you go.

1/2 tsp black pepper

Fresh-cracked pepper blooms in the hot pan. White pepper is a milder swap if you want less bite.

2 tbsp chopped fresh parsley

Flat-leaf parsley adds brightness; chives or tarragon are lovely swaps. Skip dried parsley – it adds color but no flavor.

1 tbsp fresh lemon juice

A squeeze cuts the butter's richness. Bottled lemon works in a pinch; lime is a zippier substitute.

Tips & Tricks

Dry steak, dry shrimp

Any moisture on the surface steams instead of sears, so pat everything thoroughly with paper towels before it hits the pan.

Warm your milk

Cold milk makes mashed potatoes gluey. Heat it gently in the microwave or a small saucepan before folding it in.

Don't crowd the shrimp

Cook them in a single layer so they sear golden instead of turning rubbery and pale.

Rest the steak

Five minutes off the heat lets the juices redistribute – slice too soon and they end up on the cutting board, not your plate.

Step-by-Step Instructions

1. Boil the potatoes

Cover the potatoes with cold water by an inch, add a big pinch of salt, and bring to a boil over high heat. Cook 15-18 minutes at a gentle boil until a knife slides in with zero resistance.

2. Sear the steaks

Meanwhile, heat the olive oil in a large skillet over medium-high heat (about 400F / 205C) until it shimmers. Pat the steaks dry, season both sides with salt and pepper, and sear 4-5 minutes per side until deeply golden brown and the internal temperature reads 125F (52C) for medium-rare. Rest on a board.

3. Mash with butter

Drain the potatoes, return them to the warm pot for 1 minute to steam off excess moisture, then mash with 4 tbsp butter and the warm milk until creamy. Season with salt and keep covered.

4. Sizzle the shrimp

Return the skillet to medium-high heat (about 375F / 190C). Add 1 tbsp butter, then the shrimp in a single layer. Cook 90 seconds per side until pink and curled into a loose C, then transfer to a plate.

5. Build the garlic butter

Lower the heat to medium (about 300F / 150C), add the remaining 1 tbsp butter and the garlic, and stir 30-45 seconds until fragrant and just golden – not brown. Add the lemon juice and a splash of water or broth and scrape up the browned bits until the sauce bubbles at the edges.

6. Bring it together

Return the shrimp to the pan and toss to coat in the garlic butter. Slice the rested steak against the grain into 1/2-inch strips.

7. Plate and pour

Spoon the creamy mash onto plates, top with steak and shrimp, and pour the warm garlic butter sauce over everything. Finish with parsley and a crack of pepper.

Delicious Variations

Cajun surf and turf

Dust the shrimp with Cajun seasoning before searing and stir a pinch into the butter sauce for a spicy kick.

Herb butter twist

Swap the parsley for a mix of tarragon and chives, and add a teaspoon of Dijon to the pan sauce for a French bistro feel.

Loaded mash upgrade

Fold crispy bacon bits and shredded cheddar into the mash for a steakhouse-style side that steals the show.

How to Store Garlic Butter Steak & Shrimp with Creamy Mash

Frequently Asked Questions

Here's your challenge: make this once exactly as written, then make it again your way – extra garlic, a squeeze of lime, whatever your heart says. Snap a photo of your skillet, tag me, and tell me which part you nailed. Keep your pen dancing.

Garlic Butter Steak & Shrimp with Creamy Mash

Juicy seared steak and garlicky shrimp over buttery mash, all in one skillet with pan sauce – a date-night dinner ready in under an hour.

★★★★½ 4.8 (214 ratings)

15 minPrep time35 minCook time6Servings485 kcalCalories

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🧂 Ingredients

• 2 lb (900g) Yukon Gold potatoes, peeled and cut into 1-inch chunks
• 6 tbsp (85g) unsalted butter, divided
• 1/2 cup (120ml) whole milk, warmed
• 2 (1 lb / 450g total) New York strip steaks, about 1 inch thick
• 1 lb (450g) large shrimp, peeled and deveined, tails on
• 6 cloves garlic, minced (about 2 tbsp)
• 1 tbsp olive oil
• 1 tsp kosher salt, plus more for the potatoes
• 1/2 tsp black pepper
• 2 tbsp chopped fresh parsley
• 1 tbsp fresh lemon juice

📋 Instructions

1. 1Boil the potatoes — Cover the potatoes with cold water by an inch, add a big pinch of salt, and bring to a boil over high heat. Cook 15-18 minutes at a gentle boil until a knife slides in with zero resistance.
2. 2Sear the steaks — Meanwhile, heat the olive oil in a large skillet over medium-high heat (about 400F / 205C) until it shimmers. Pat the steaks dry, season both sides with salt and pepper, and sear 4-5 minutes per side until deeply golden brown and the internal temperature reads 125F (52C) for medium-rare. Rest on a board.
3. 3Mash with butter — Drain the potatoes, return them to the warm pot for 1 minute to steam off excess moisture, then mash with 4 tbsp butter and the warm milk until creamy. Season with salt and keep covered.
4. 4Sizzle the shrimp — Return the skillet to medium-high heat (about 375F / 190C). Add 1 tbsp butter, then the shrimp in a single layer. Cook 90 seconds per side until pink and curled into a loose C, then transfer to a plate.
5. 5Build the garlic butter — Lower the heat to medium (about 300F / 150C), add the remaining 1 tbsp butter and the garlic, and stir 30-45 seconds until fragrant and just golden – not brown. Add the lemon juice and a splash of water or broth and scrape up the browned bits until the sauce bubbles at the edges.
6. 6Bring it together — Return the shrimp to the pan and toss to coat in the garlic butter. Slice the rested steak against the grain into 1/2-inch strips.
7. 7Plate and pour — Spoon the creamy mash onto plates, top with steak and shrimp, and pour the warm garlic butter sauce over everything. Finish with parsley and a crack of pepper.

👨‍🍳 Chef's Note: Slice the steak against the grain – look for the lines running through the meat and cut perpendicular to them for the tenderest bite.

Servings: 6

Cuisine: American

Course: Main Course

Nutrition (per serving): 485 kcal · 36g protein · 28g carbs · 26g fat

Written by Priya Sharma

Priya explores creative writing prompts and storytelling techniques for aspiring authors. She shares exercises to spark imagination and build narrative confidence, drawn from her own writing practice.