Decadent Keto Garlic Shrimp Au Gratin

By chef sofia on May 17, 2026

Close-up of bubbling Keto Garlic Shrimp Au Gratin in a pan, topped with melted cheese and fresh parsley.

Oh my gosh, you guys, get ready for a seriously decadent dinner that’s actually keto-friendly! I totally whipped up this Keto Garlic Shrimp Au Gratin on a whim last week when I was craving something super comforting but didn’t want to derail my low-carb goals. It’s that perfect blend of creamy, cheesy goodness with tender shrimp that just screams “treat yourself!”

Seriously, this dish is a winner because it’s incredibly rich and satisfying without a ton of carbs. It’s fast enough for a weeknight but feels fancy enough for company. We’re talking minimal effort for maximum flavor, and I can’t wait to share how easy it is to make this cheesy dream a reality in your own kitchen!

Why You’ll Love This Keto Garlic Shrimp Au Gratin

  • It’s lightning fast – seriously, dinner on the table in about 30 minutes from start to finish!
  • Pure comfort food bliss with that creamy garlic cheese sauce and perfectly cooked shrimp.
  • Totally keto-friendly and low-carb, so you can indulge guilt-free.
  • Minimal cleanup because who doesn’t love a one-pan wonder (well, mostly one pan!).
  • The flavor is just out of this world – rich, savory, and oh-so-cheesy!

Gather Your Ingredients for Keto Garlic Shrimp Au Gratin

You probably have most of these things already in your kitchen! Seriously, the beauty of this Keto Garlic Shrimp Au Gratin is how simple the ingredients are. No fancy stuff needed, just good old pantry staples and some gorgeous shrimp.

  • 1 1/2 pounds large shrimp, peeled and deveined (make sure they’re nice and dry!)
  • 2 tablespoons unsalted butter
  • 4 cloves garlic, all minced up fine
  • 1 cup heavy cream (the good stuff, don’t skimp!)
  • 4 ounces cream cheese, softened (this is key for a smooth sauce!)
  • 1 cup shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 teaspoon sea salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon paprika (for that lovely color and subtle kick)
  • 1 cup shredded Monterey Jack cheese
  • 1 tablespoon chopped fresh parsley, for that pop of green at the end

Step-by-Step Instructions for Keto Garlic Shrimp Au Gratin

Okay, let’s get this cheesy goodness going! This is where the magic happens, and honestly, it’s so straightforward you’ll wonder why you haven’t made it before. Trust me, the aroma alone is worth it!

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Step 1: First things first, crank your oven up to 400°F (that’s 200°C for my international friends!). While it’s heating, grab your shrimp and give them a good pat-dry with some paper towels. This little step is super important for getting them to sear nicely and not just steam. Once they’re dry, give them a sprinkle of salt, pepper, and that pretty paprika. Now they’re ready for their close-up!

Step 2: Melt the butter in a trusty skillet over medium heat. Once it’s shimmering, toss in your minced garlic. Oh, that smell! Cook it for just about a minute until you can really smell that garlicky goodness – don’t let it brown, or it gets bitter. Then, add your seasoned shrimp to the skillet. Cook them for just a couple of minutes, stirring them around, until they just start to turn pink. We’re not cooking them all the way through here, just giving them a head start!

Step 3: Now, turn the heat down a bit. Pour in the heavy cream and then drop in the softened cream cheese. Stir it all up until the cream cheese melts into the cream, creating this lusciously smooth sauce. It’s going to look amazing, I promise!

Step 4: Toss in the shredded mozzarella and grated Parmesan cheese. Keep stirring gently until all that glorious cheese is melted and the sauce is thick and creamy. This is the heart of our au gratin sauce, so savor this moment!

Step 5: Pour this incredible shrimp and sauce mixture into a lightly greased baking dish. Make sure it’s spread out evenly. Then, sprinkle that Monterey Jack cheese all over the top. This is the crunchy, bubbly topping we all dream of!

Step 6: Pop that dish into your preheated oven and bake for about 12 to 15 minutes. You’re looking for the cheese to be beautifully golden brown and bubbly, and the shrimp to be fully cooked through (they should be opaque and reach 145°F internal temp if you have a thermometer handy). If you’re a fan of quick shrimp dishes, you might also love my Air Fryer Garlic Parmesan Shrimp or my easy Sheet Pan Shrimp and Broccoli!

Close-up of bubbly Keto Garlic Shrimp Au Gratin baked in a cast iron skillet, topped with fresh parsley.

Step 7: Once it’s out of the oven, give it a sprinkle of fresh chopped parsley. It just adds that perfect touch of freshness and color. Serve it up hot and get ready for some serious compliments!

Close-up of bubbling Keto Garlic Shrimp Au Gratin in a black skillet, topped with fresh parsley.

What to Serve with Your Keto Garlic Shrimp Au Gratin

This rich and creamy Keto Garlic Shrimp Au Gratin is amazing on its own, but serving it with the right sides really makes it a complete meal. Here are a few of my favorites that keep it low-carb and delicious:

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Garlic Parmesan Roasted Broccoli: This is a no-brainer! The roasted broccoli gets a little tender-crisp, and the garlic and Parmesan just echo the flavors in the shrimp. You can find my super easy recipe right here.

Crispy Baked Zucchini Fries: For something a little different, these zucchini fries are awesome. They’re crunchy on the outside and tender inside, making them a fun alternative to potatoes and they’re surprisingly delicious dipped in that leftover cheesy sauce! Check out how to make them here.

Cucumber Tomato Avocado Salad: If you want something super fresh and light to cut through the richness, this salad is perfection. The creamy avocado, juicy tomatoes, and crisp cucumber are a fantastic contrast. You can get the simple recipe here.

Storing and Reheating Your Keto Garlic Shrimp Au Gratin

Got leftovers? Lucky you! To keep your Keto Garlic Shrimp Au Gratin tasting its best, let it cool down a bit, then pop it into an airtight container in the fridge. It’ll be good for about 3 to 4 days. Honestly, the creamy sauce might thicken up a little more as it chills, but don’t worry, that’s totally normal!

For reheating, I find the oven or toaster oven works wonders to get that cheesy topping bubbly again. Just pop a portion into a small oven-safe dish at around 350°F (175°C) for about 10-15 minutes until it’s warmed through. A quick zap in the microwave works in a pinch too, but you won’t get quite as much crispiness on top. Either way, it’s still delicious!

Frequently Asked Questions About Keto Garlic Shrimp Au Gratin

Can I make this Keto Garlic Shrimp Au Gratin ahead of time?

You sure can! This cheesy shrimp bake is great for meal prep. Just assemble it in your baking dish (but don’t bake it yet!), cover it tightly, and keep it in the fridge. When you’re ready to bake, just add a few extra minutes to the cooking time, and you’ll have a perfect dinner. If you’re looking for other make-ahead ideas, you might check out my high-protein casserole recipes!

What kind of shrimp is best for this recipe?

I usually go for large or jumbo shrimp for this Keto Garlic Shrimp Au Gratin because they hold up so well in the creamy sauce and have a satisfying bite. Make sure they’re peeled and deveined! You can use fresh or frozen (just thaw them completely and pat dry), but remember, you’re just giving them a quick cook in the pan before they bake, so don’t overcook them at that stage – save the perfection for the oven!

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Is this recipe suitable for other low-carb seafood?

Absolutely! While this Keto Garlic Shrimp Au Gratin is fantastic with shrimp, you could totally swap it out for scallops or even bite-sized pieces of cod or haddock. Just adjust the cooking time for the seafood as needed, as different types cook at different rates. For other fun low-carb snacks, you might like my Keto Mozzarella Sticks!

Enjoy Your Delicious Keto Garlic Shrimp Au Gratin!

I really hope you give this Keto Garlic Shrimp Au Gratin a try. It’s honestly become a favorite in my house for a quick, satisfying, and totally keto-friendly meal. Let me know in the comments below how you liked it, or if you tried any fun variations! I’d also love to see your creations on social media – tag me on Facebook or Pinterest!

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Close-up of bubbling Keto Garlic Shrimp Au Gratin topped with golden-brown cheese and fresh parsley.

Keto Garlic Shrimp Au Gratin


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  • Author: chefsofia
  • Total Time: 30 min
  • Yield: 4 servings
  • Diet: Low Calorie

Description

Rich, creamy, and packed with tender shrimp baked in a bubbly garlic cheese sauce. This comforting seafood casserole delivers bold flavor in every bite.


Ingredients

  • 1 1/2 pounds large shrimp peeled and deveined
  • 2 tablespoons unsalted butter
  • 4 cloves garlic minced
  • 1 cup heavy cream
  • 4 ounces cream cheese softened
  • 1 cup shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 teaspoon sea salt
  • 1/2 teaspoon black pepper
  • 1/2 teaspoon paprika
  • 1 tablespoon chopped fresh parsley
  • 1 cup shredded Monterey Jack cheese


Instructions

  1. Preheat your oven to 400°F.
  2. Pat the shrimp dry with paper towels. Season them with sea salt, black pepper, and paprika.
  3. Melt the butter in a large skillet over medium heat. Add the garlic and cook for 1 minute until fragrant.
  4. Add the shrimp to the skillet and cook for 2 minutes, stirring occasionally, until the shrimp begin turning pink but are not fully cooked.
  5. Lower the heat and stir in the heavy cream and cream cheese. Cook until the cream cheese fully melts and the sauce becomes smooth.
  6. Stir in the mozzarella cheese and Parmesan cheese until melted and creamy.
  7. Transfer the shrimp mixture to a lightly greased baking dish. Sprinkle the Monterey Jack cheese evenly over the top.
  8. Bake for 12 to 15 minutes until the cheese is melted and golden brown and the shrimp reach an internal temperature of 145°F.
  9. Garnish with fresh parsley before serving.

Notes

  • Serve with roasted broccoli, cauliflower mash, or a crisp green salad for a complete keto-friendly meal.
  • Prep Time: 10 min
  • Cook Time: 20 min
  • Category: Dinner
  • Method: Baking
  • Cuisine: American

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