Slow Cooker Garlic Butter Shrimp

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Ingredients

Main Ingredients

  • 2 pounds (900 g) large raw shrimp, peeled and deveined (fresh or frozen)
  • ½ cup (115 g) unsalted butter, melted
  • 6 cloves garlic, minced
  • 2 tablespoons olive oil
  • 1 tablespoon fresh lemon juice
  • 1 teaspoon lemon zest
  • 1 teaspoon Italian seasoning
  • ½ teaspoon paprika
  • ½ teaspoon onion powder
  • ½ teaspoon garlic powder
  • ½ teaspoon crushed red pepper flakes (optional)
  • Salt, to taste
  • Freshly ground black pepper

Optional Additions

  • ½ cup grated Parmesan cheese
  • 2 tablespoons chopped fresh parsley
  • Fresh basil
  • Chopped chives
  • Extra lemon wedges for serving

Equipment

  • Slow cooker (4–6 quart)
  • Mixing bowl
  • Measuring cups and spoons
  • Wooden spoon

Instructions

Step 1: Prepare the Shrimp

If using frozen shrimp, thaw them completely under cold running water or overnight in the refrigerator. Pat them dry thoroughly with paper towels to remove excess moisture.

If your shrimp still have shells or tails, remove them if desired. Leaving the tails on can make for a prettier presentation, but tail-off shrimp are easier to eat.

Step 2: Make the Garlic Butter Sauce

In a bowl, whisk together:

  • Melted butter
  • Olive oil
  • Minced garlic
  • Lemon juice
  • Lemon zest
  • Italian seasoning
  • Paprika
  • Onion powder
  • Garlic powder
  • Red pepper flakes
  • Salt
  • Black pepper

Mix until fully combined.

Step 3: Assemble

Lightly grease the inside of the slow cooker.

Add the shrimp in an even layer.

Pour the garlic butter mixture evenly over the shrimp.

Gently toss to coat every piece.

If using Parmesan cheese, sprinkle half over the shrimp before cooking.

Step 4: Cook

Cook on LOW for 1–2 hours or until the shrimp are pink, opaque, and just cooked through.

Do not cook on HIGH unless absolutely necessary, and avoid overcooking. Shrimp cook very quickly, and extended cooking can make them rubbery.

If using pre-cooked shrimp, simply heat them on LOW for 30–45 minutes.

Step 5: Finish

Once cooked:

  • Stir gently.
  • Sprinkle with the remaining Parmesan cheese.
  • Add chopped parsley and basil.
  • Finish with an extra squeeze of fresh lemon juice.

Serving Suggestions

This garlic butter shrimp pairs beautifully with:

  • Angel hair pasta
  • Linguine
  • Fettuccine
  • Steamed jasmine rice
  • Garlic mashed potatoes
  • Buttered noodles
  • Creamy risotto
  • Roasted asparagus
  • Steamed broccoli
  • Crusty French bread
  • Garlic bread
  • Caesar salad

Tips for Success

  • Fresh shrimp provide the best texture, but high-quality frozen shrimp work well too.
  • Pat shrimp dry before cooking to prevent excess liquid.
  • Use real butter rather than margarine for the richest flavor.
  • Fresh garlic is strongly recommended over garlic powder alone.
  • Avoid lifting the slow cooker lid frequently, as it releases heat.
  • Check the shrimp after about 1 hour; they may be done sooner depending on their size.
  • Add fresh herbs only at the end to preserve their flavor and color.

Variations

Creamy Garlic Butter Shrimp

Stir in:

  • ½ cup heavy cream
  • ¼ cup cream cheese

during the last 20 minutes of cooking for a rich, velvety sauce.

Cajun Style

Add:

  • 2 teaspoons Cajun seasoning
  • Extra paprika
  • A pinch of cayenne pepper

for a spicy Southern twist.

Lemon Herb Version

Increase the lemon juice and zest, and add fresh dill and thyme for a brighter, more refreshing flavor.

Garlic Parmesan Shrimp

Double the Parmesan cheese and stir it into the hot butter sauce just before serving for an extra cheesy finish.

Storage

Refrigerate leftovers in an airtight container for up to 3 days.

Reheat gently in a skillet over low heat with a splash of butter or broth. Avoid microwaving for too long, as shrimp can become tough.

Freezing after cooking is not recommended, as the texture of the shrimp may deteriorate.

Nutritional Information (Approximate Per Serving)

  • Calories: 360
  • Protein: 32 g
  • Fat: 24 g
  • Carbohydrates: 3 g
  • Fiber: 0 g
  • Sugar: 1 g
  • Sodium: 670 mg

Why You’ll Love This Recipe

Slow Cooker Garlic Butter Shrimp is the perfect combination of convenience and flavor. The slow cooking process allows the garlic, butter, herbs, and lemon to meld into a luxurious sauce while keeping the shrimp juicy and tender. With minimal prep and simple ingredients, it’s an ideal recipe for busy weeknights, dinner parties, or anytime you’re craving a comforting seafood dish. Serve it over your favorite pasta or rice, garnish with fresh herbs and Parmesan, and enjoy a meal that’s both effortless and impressive.

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