Slow Cooker Frozen Shrimp in Garlic Butter Sauce

If you pulled a bag of frozen shrimp out of the freezer with no time to thaw them, this slow cooker frozen shrimp recipe is your dinner savior. Cooking frozen raw shrimp directly in a crockpot with rich garlic butter, lemon, and herbs creates a tender, succulent seafood meal in under an hour.

It is a common myth that seafood gets rubbery when cooked in a slow cooker. The secret lies in starting with rock-solid frozen shrimp and fat-poaching them over low heat. As the ice glaze gently melts, the shrimp poaches in melted butter and aromatics, developing a rich scampi-style pan sauce right inside the slow cooker insert.

Why Cook Frozen Shrimp in a Slow Cooker?

Cooking frozen seafood directly in a slow cooker relies on simple culinary science to keep delicate proteins tender and juicy.

• Gentle Heat Defrosting: Placing frozen shrimp into a warming crockpot allows the heat to melt the icy coating first. This prevents the delicate shrimp meat from overheating too quickly.
• Built-in Pan Sauce: The ice glaze melts into the butter, lemon juice, and white wine to form a silky, natural garlic butter sauce.
• No Pre-Thawing Required: Skipping the 30-minute water-soak step saves time on busy weeknights.

Quick Recipe Details

• Prep Time: 5 minutes
• Cook Time: 45 to 60 minutes (LOW) or 30 to 35 minutes (HIGH)
• Total Time: 50 to 65 minutes
• Servings: 4 to 6 servings
• Course: Main Course
• Cuisine: Coastal American / Comfort Food

Ingredients

• 2 lbs raw frozen shrimp: Large or jumbo (16/20 or 21/25 count), peeled and deveined.
• 1/2 cup unsalted butter: Cut into small cubes.
• 6 to 8 cloves fresh garlic: Finely minced.
• 1/4 cup dry white wine: Pinot Grigio or Sauvignon Blanc (or sub low-sodium chicken broth).
• 2 tbsp fresh lemon juice & 1 tsp zest: Freshly squeezed.
• 1.5 tsp Italian seasoning: Dried oregano, basil, and thyme.
• 1 tsp Old Bay seasoning or smoked paprika: Adds warmth and color.
• 1/2 tsp garlic powder & 1/2 tsp onion powder: Enhances the savory depth.
• 1/4 tsp crushed red pepper flakes: Optional for light heat.
• 1 tsp kosher salt & 1/2 tsp black pepper
• 1/3 cup fresh Italian flat-leaf parsley: Finely chopped.

Step-by-Step Instructions

1. Prepare the Slow Cooker InsertLightly spray a 4-to-6-quart slow cooker insert with non-stick cooking spray or brush with melted butter.
2. Add Frozen Shrimp & SeasoningsEmpty the raw frozen shrimp directly from the bag into the slow cooker in a single layer. Sprinkle the minced garlic, Italian seasoning, Old Bay (or paprika), garlic powder, onion powder, salt, black pepper, and red pepper flakes over the shrimp.
3. Add Liquids and ButterPour the white wine (or chicken broth) and fresh lemon juice around the edges of the pot. Scatter the cubed butter pats evenly across the top.
4. Cover and CookCover with the lid and set the slow cooker to LOW for 45 to 60 minutes (or HIGH for 30 to 35 minutes). Check at 45 minutes—the shrimp are done as soon as they turn pink, opaque, and form a gentle “C” shape.
5. Garnish and ServeTurn off the heat. Gently toss the shrimp with a silicone spatula to coat them in the hot garlic butter sauce. Sprinkle with fresh chopped parsley and serve immediately with fresh lemon wedges.

Common Cooking Mistakes

Mistake	What Happens	The Easy Fix
Cooking Over 60 Minutes	Shrimp cook fast; leaving them too long makes them tough.	Set a timer and check for opacity at 45 minutes on LOW.
Using Pre-Cooked Shrimp	Already-cooked shrimp double-cook and turn rubbery.	Always buy raw frozen shrimp (gray and translucent).
Adding Extra Liquid	Adding extra water dilutes the garlic butter pan sauce.	Let the natural ice glaze on the shrimp create the sauce.
Reheating on High Power	High heat causes seafood to become chewy and dry.	Reheat leftovers on 50% microwave power or in a low skillet.

Serving Suggestions

• Garlic Butter Pasta: Boil fettuccine, angel hair, or penne pasta and toss directly into the warm garlic butter pan juices.
• Crusty Bread: Serve with slices of warm French baguette or garlic bread for dipping.
• Rice Bowls: Spoon the shrimp and pan sauce over a bed of steamed jasmine rice or quinoa.
• Low-Carb Option: Serve alongside roasted asparagus, zucchini noodles, or steamed broccoli.

Storage & Reheating Instructions

• Storage: Keep leftover shrimp and sauce in an airtight glass container in the refrigerator for up to 2 days.
• Stovetop Reheating: Warm in a small skillet over low heat for 3 to 4 minutes until the butter melts and the shrimp are heated through.
• Microwave Reheating: Warm on 50% power in 30-second intervals to prevent the seafood from overcooking.

Print-Ready Recipe Card

Slow Cooker Garlic Butter Frozen Shrimp

Prep Time: 5 mins | Cook Time: 50 mins | Servings: 4-6

Ingredients:

• 2 lbs raw frozen jumbo shrimp, peeled & deveined
• 1/2 cup unsalted butter, cubed
• 6-8 cloves fresh garlic, minced
• 1/4 cup dry white wine or chicken broth
• 2 tbsp fresh lemon juice + 1 tsp zest
• 1.5 tsp Italian seasoning
• 1 tsp Old Bay or smoked paprika
• 1/2 tsp garlic powder
• 1/2 tsp onion powder
• 1/4 tsp red pepper flakes (optional)
• 1 tsp kosher salt & 1/2 tsp black pepper
• 1/3 cup fresh parsley, chopped

Instructions:

1. Spray slow cooker insert with cooking spray.
2. Place frozen shrimp directly into the pot in an even layer.
3. Sprinkle with seasonings, minced garlic, and lemon zest.
4. Pour in white wine and lemon juice, then top with butter cubes.
5. Cover and cook on LOW for 45 to 60 minutes (or HIGH for 30-35 minutes) until pink and opaque.
6. Stir gently, garnish with fresh parsley, and serve hot!