Why You’ll Love This Recipe
- Uses frozen shrimp—no thawing required
- Minimal preparation
- Rich garlic butter flavor
- Perfect for busy schedules
- Ready in about 2 hours
- Family-friendly
- Great over pasta or rice
- Easy to customize
Ingredients
Main Ingredients
- 2 pounds (900 g) frozen raw large shrimp (peeled and deveined, tails on or off)
- ½ cup unsalted butter, cut into cubes
- 6 cloves garlic, minced
- 1 small onion, finely diced
- 1 tablespoon olive oil
- 1 tablespoon lemon juice
- 1 teaspoon lemon zest
- 1 teaspoon Italian seasoning
- 1 teaspoon paprika
- ½ teaspoon onion powder
- ½ teaspoon garlic powder
- ½ teaspoon black pepper
- ½ teaspoon salt (adjust to taste)
- ¼ teaspoon crushed red pepper flakes (optional)
Optional Additions
- ½ cup chicken broth or seafood stock
- 2 tablespoons dry white wine
- 1 tablespoon Worcestershire sauce
- 1 tablespoon chopped fresh parsley
- ¼ cup grated Parmesan cheese (for serving)
Equipment
- 4–6 quart slow cooker (crockpot)
- Measuring cups and spoons
- Wooden spoon
- Serving dish
Step 1: Prepare the Slow Cooker
Lightly grease the inside of the crockpot with cooking spray or brush it with a little olive oil.
This helps prevent sticking and makes cleanup easier.
Step 2: Add the Frozen Shrimp
Place the frozen shrimp directly into the crockpot in an even layer.
There’s no need to thaw them first, but make sure you’re using raw frozen shrimp, not pre-cooked shrimp, as pre-cooked shrimp can become rubbery during slow cooking.
Step 3: Add the Aromatics
Scatter the minced garlic and diced onion evenly over the shrimp.
The garlic will mellow and become sweet as it cooks, while the onion adds depth and richness to the sauce.
Step 4: Season Everything
Sprinkle over:
- Italian seasoning
- Paprika
- Garlic powder
- Onion powder
- Black pepper
- Salt
- Red pepper flakes (if using)
Pour in the olive oil, lemon juice, and optional chicken broth or seafood stock.
Dot the top with the cubes of butter.
Step 5: Slow Cook
Cover the crockpot with the lid.
Cook on LOW for 1½–2 hours, or until the shrimp are pink, opaque, and fully cooked.
Avoid cooking on HIGH for long periods, as shrimp cook quickly and can become tough if overcooked.
About halfway through the cooking time, gently stir the shrimp to ensure they’re evenly coated in the buttery sauce.
Step 6: Finish the Sauce
Once the shrimp are cooked, stir in the lemon zest and fresh parsley.
Taste the sauce and adjust the seasoning if needed.
For a richer finish, sprinkle a little grated Parmesan over the shrimp just before serving.
Step 7: Serve
Serve the shrimp immediately while hot.
Spoon plenty of the garlic butter sauce over the top and garnish with extra parsley and lemon wedges.
Serving Suggestions
This crockpot shrimp is delicious served with:
- Buttered linguine
- Fettuccine Alfredo
- Steamed jasmine rice
- Garlic mashed potatoes
- Creamy polenta
- Crusty French bread
- Garlic bread
- Roasted asparagus
- Steamed broccoli
- Green beans
- Caesar salad
Flavor Variations
Cajun Shrimp
Replace the Italian seasoning with 2 teaspoons Cajun seasoning and add a dash of hot sauce.
Creamy Garlic Shrimp
Stir in:
- ½ cup heavy cream
- ¼ cup grated Parmesan
during the last 15 minutes of cooking.
Lemon Herb Shrimp
Double the lemon juice and add:
- Fresh dill
- Chives
- Thyme
Spicy Butter Shrimp
Increase the crushed red pepper flakes and add a teaspoon of smoked paprika for extra heat.
Mediterranean Style
Add:
- Cherry tomatoes
- Kalamata olives
- Baby spinach
during the final 20 minutes.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Reheating
Warm gently in a skillet over low heat or microwave in 20-second intervals, stirring between each interval.
Avoid overheating, as shrimp can become rubbery.
Tips for Success
- Use raw frozen shrimp for the best texture.
- Don’t overcook—shrimp are done as soon as they turn pink and opaque.
- Fresh garlic provides the best flavor.
- Unsalted butter lets you control the salt level.
- Stir gently to avoid breaking the shrimp.
- Add fresh parsley at the end to preserve its bright flavor.
- Serve immediately for the juiciest shrimp.
Nutritional Information (Approximate)
Per serving (based on 6 servings):
- Calories: 290
- Protein: 28 g
- Carbohydrates: 4 g
- Fat: 18 g
- Saturated Fat: 9 g
- Cholesterol: 250 mg
- Sodium: 520 mg
- Fiber: 0 g
- Sugar: 1 g
Frequently Asked Questions
Can I really use frozen shrimp?
Yes. This recipe is designed for raw frozen shrimp, which release a little moisture as they cook, creating a flavorful sauce with the butter and seasonings.
Should I thaw the shrimp first?
No. The shrimp can go straight from the freezer into the crockpot. If they are frozen together in one large block, rinse them briefly under cold water just long enough to separate them.
Can I use cooked shrimp?
It’s not recommended. Cooked shrimp can become overcooked and rubbery in a slow cooker. If using cooked shrimp, add them only during the last 10–15 minutes to warm through.
Can I make this dairy-free?
Yes. Substitute the butter with a plant-based butter alternative or a combination of olive oil and dairy-free margarine.
Final Thoughts
This Crockpot Garlic Butter Shrimp recipe proves that delicious seafood doesn’t have to be complicated. Starting with frozen raw shrimp makes it incredibly convenient, while the slow cooker gently infuses every bite with the rich flavors of butter, garlic, lemon, and herbs. The result is juicy, tender shrimp in a silky, savory sauce that’s perfect for spooning over pasta, rice, or vegetables.