Introduction
This Creamy Garlic Parmesan Shrimp Casserole is the ultimate comfort-food dinner for seafood and pasta lovers. It combines tender shrimp, perfectly cooked pasta, a rich garlic Parmesan cream sauce, and bubbling melted mozzarella in one irresistible casserole.
The result is a creamy, cheesy, restaurant-style meal that is surprisingly easy to prepare at home. It is perfect for a family dinner, weekend gathering, or cozy meal when you want something hearty and satisfying.
The combination of garlic, Parmesan, mozzarella, and succulent shrimp creates layers of flavor, while fresh parsley adds a bright finishing touch.
Recipe Overview
| Category | Details |
| Prep Time | 15 minutes |
| Cook Time | 20 minutes |
| Total Time | 35 minutes |
| Servings | 6 |
| Difficulty | Easy |
| Cuisine | American / Italian-inspired |
| Cooking Method | Stovetop + Oven |
| Baking Temperature | 375°F (190°C) |
| Baking Dish | 9 × 13 inches |
Why You’ll Love This Recipe
This casserole is incredibly creamy, cheesy, and flavorful without requiring complicated cooking techniques.
The shrimp cook directly on top of the pasta, allowing their savory juices and seasonings to complement the creamy garlic Parmesan sauce.
It is also a wonderful weeknight dinner because the pasta and sauce can be prepared quickly before everything is transferred to one baking dish.
The golden, bubbling cheese on top makes the finished casserole especially appealing when served straight from the oven.
Ingredients
Pasta & Shrimp
| Ingredient | Quantity | Notes |
| Penne or Rotini Pasta | 12 oz (340 g) | Cook until al dente |
| Large Shrimp | 1 lb (450 g) | Peeled and deveined |
| Olive Oil | 1 tbsp | For seasoning shrimp |
| Paprika | 1 tsp | Adds color and flavor |
| Garlic Powder | 1/2 tsp | For the shrimp |
| Salt | To taste | Adjust as needed |
| Black Pepper | To taste | Freshly cracked preferred |
Creamy Garlic Parmesan Sauce
| Ingredient | Quantity | Notes |
| Unsalted Butter | 3 tbsp | For the sauce |
| Fresh Garlic | 4 cloves | Finely minced |
| Chicken or Vegetable Broth | 1/2 cup (120 ml) | Adds savory flavor |
| Heavy Whipping Cream | 1 1/2 cups (360 ml) | Creates the creamy sauce |
| Shredded Mozzarella | 1 cup | Divided |
| Grated Parmesan | 3/4 cup | Freshly grated preferred |
| Fresh Parsley | 2 tbsp | Finely chopped |
| Extra Parsley | As needed | For garnish |
Step-by-Step Instructions
Prepare the Pasta
Bring a large pot of generously salted water to a boil.
Add the penne or rotini and cook according to the package directions until al dente.
Avoid overcooking the pasta because it will continue cooking slightly in the oven.
Drain the pasta well and set it aside.
Preheat the oven to 375°F (190°C).
Prepare the Shrimp
Pat the peeled and deveined shrimp dry with paper towels. Removing excess moisture helps the seasoning adhere better and encourages even cooking.
Place the shrimp in a bowl and add olive oil, paprika, garlic powder, salt, and black pepper.
Toss gently until every shrimp is evenly coated.
Set aside while you prepare the sauce.
Make the Garlic Butter Base
Place a large skillet over medium heat.
Add the butter and allow it to melt completely.
Add the minced garlic and cook for approximately 30–60 seconds, stirring frequently.
The garlic should become fragrant without turning dark brown.
Add the Broth
Pour in the chicken or vegetable broth.
Stir well, scraping any flavorful bits from the bottom of the skillet.
Allow the broth to simmer for approximately 2 minutes so it reduces slightly.
Create the Creamy Sauce
Reduce the heat to low.
Slowly pour in the heavy cream while whisking continuously.
Allow the mixture to gently simmer for approximately 3–4 minutes, stirring occasionally, until it begins to thicken.
Do not let the cream boil aggressively.
Add the Cheese
Remove the skillet from the heat.
Add the grated Parmesan, 1/2 cup of the shredded mozzarella, and chopped parsley.
Stir until the cheeses are melted and the sauce becomes smooth and creamy.
Taste the sauce and adjust the salt and black pepper if necessary.
Combine the Pasta and Sauce
Add the drained pasta directly into the creamy garlic Parmesan sauce.
Toss gently until all of the pasta is thoroughly coated.
If the sauce appears unusually thick, add a small splash of reserved pasta water or broth to loosen it.
Assemble the Casserole
Transfer the creamy pasta mixture into a 9 × 13-inch baking dish.
Spread it evenly across the dish.
Arrange the seasoned shrimp over the pasta in a single layer.
Try not to overlap the shrimp too much so they cook evenly.
Add the Mozzarella
Sprinkle the remaining 1/2 cup mozzarella cheese evenly over the shrimp and pasta.
For an extra golden finish, make sure the cheese reaches the edges of the casserole.
Bake
Place the casserole in the preheated oven.
Bake uncovered for approximately 15–18 minutes, or until the shrimp are pink and opaque, cooked through, and the cheese is melted and bubbling.
Avoid overcooking the shrimp because they can become rubbery when left in the oven for too long.
For food safety, shrimp should reach approximately 145°F (63°C) internally.
Garnish and Serve
Remove the casserole from the oven.
Allow it to rest for approximately 5 minutes before serving.
Sprinkle generously with freshly chopped parsley.
Serve warm while the cheese is still creamy and bubbly.
Best Tips
Use large shrimp whenever possible because they are less likely to overcook during baking.
Pat the shrimp dry before seasoning. Excess moisture can prevent the seasonings from sticking properly.
Cook the pasta only until al dente. Soft pasta can become mushy after baking.
Freshly grated Parmesan generally melts more smoothly than pre-shredded Parmesan.
Keep the cream sauce at a gentle simmer rather than allowing it to boil rapidly.
Do not overbake the casserole. Once the shrimp are cooked and the cheese is bubbling, it is ready.
Allowing the casserole to rest for a few minutes before serving helps the sauce settle and makes it easier to portion.
Best Ingredient Options
Shrimp
Fresh or properly thawed frozen shrimp can be used. If using frozen shrimp, thaw them completely and pat them dry before seasoning.
Pasta
Penne and rotini work particularly well because their shapes hold onto the creamy sauce.
Rigatoni, fusilli, farfalle, or shells are also excellent alternatives.
Cheese
Mozzarella provides the stretchy, golden topping, while Parmesan contributes a deeper savory flavor.
For additional flavor, you can add a small amount of provolone or Romano cheese.
Cream
Heavy whipping cream creates the richest sauce. For a slightly lighter version, half-and-half can be used, although the sauce may be less thick.
Recipe Variations
Spinach Garlic Parmesan Shrimp Casserole
Add 2–3 cups of fresh baby spinach to the sauce just before combining it with the pasta. Stir until the spinach wilts.
Broccoli Shrimp Casserole
Add steamed broccoli florets to the pasta before transferring everything to the baking dish.
Spicy Garlic Shrimp Casserole
Add 1/4–1/2 teaspoon of red pepper flakes to the garlic butter sauce for a pleasant kick.
Cajun Shrimp Casserole
Replace the paprika with Cajun seasoning and add a small amount of smoked paprika for a deeper flavor.
Lemon Garlic Parmesan Shrimp
Add 1 tablespoon of fresh lemon juice and a little lemon zest to the finished sauce for a brighter flavor.
Mushroom Shrimp Casserole
Sauté sliced mushrooms with the garlic before adding the broth and cream.
What to Serve With
A simple green salad is an excellent choice because its fresh flavor balances the richness of the creamy casserole.
Steamed broccoli, asparagus, or green beans can add extra vegetables to the meal.
Warm garlic bread is perfect for soaking up the remaining garlic Parmesan sauce.
For a lighter side, serve the casserole with roasted vegetables and a fresh lemon vinaigrette.
Make-Ahead Instructions
You can prepare the pasta and creamy sauce several hours in advance.
Allow the pasta mixture to cool slightly before assembling the casserole.
Cover the assembled pasta and refrigerate it until ready to bake.
For the best shrimp texture, add the seasoned shrimp shortly before baking rather than leaving raw shrimp sitting on the casserole for several hours.
If baking directly from the refrigerator, you may need to add several extra minutes to the cooking time.
Storage
Allow leftovers to cool before transferring them to an airtight container.
Store in the refrigerator for up to 3 days.
Because shrimp and cream sauces can become dry when stored, add a small splash of cream, milk, or broth when reheating if necessary.
Reheating
Reheat individual portions in the microwave in short intervals until hot throughout.
For a larger portion, cover the casserole with foil and reheat in a 325°F (165°C) oven until warmed through.
Avoid overheating because shrimp can become tough and the cream sauce can separate.
Freezing
This casserole can technically be frozen, but the texture of the creamy sauce and shrimp may change after thawing.
For the best quality, enjoy it fresh or refrigerate leftovers for a few days rather than freezing the finished casserole.
If you do freeze it, cool it completely, place it in a freezer-safe airtight container, and use it within approximately 1–2 months for the best quality.
Thaw overnight in the refrigerator before reheating.
Common Mistakes to Avoid
Overcooking the Shrimp
Shrimp cook quickly. Baking them too long can make them firm and rubbery.
Overcooking the Pasta
The pasta will continue cooking in the oven, so always begin with al dente pasta.
Boiling the Cream Sauce
A vigorous boil can cause a cream-based sauce to become grainy or separate. Keep the heat low and simmer gently.
Using Wet Shrimp
Excess moisture can dilute the seasoning and affect the texture. Pat shrimp dry before seasoning.
Adding Too Much Cheese
Although this is a cheesy casserole, excessive cheese can make the sauce overly thick or greasy. Follow the recommended quantities for a balanced texture.
Skipping the Resting Time
Give the casserole a few minutes to rest after baking. This allows the sauce to settle and makes serving easier.
Nutrition Estimate
Approximate values per serving. Actual nutrition will vary depending on the specific ingredients and portion sizes used.
| Nutrient | Estimated Amount |
| Calories | 650 kcal |
| Protein | 37 g |
| Carbohydrates | 53 g |
| Fat | 34 g |
| Saturated Fat | 18 g |
| Fiber | 3 g |
| Sugar | 4 g |
| Sodium | 780 mg |
| Calcium | 330 mg |
Frequently Asked Questions
Can I use frozen shrimp?
Yes. Thaw the shrimp completely before using them, then pat them dry with paper towels.
Can I use another type of pasta?
Absolutely. Rotini, rigatoni, shells, fusilli, and farfalle are all good choices.
Can I make this recipe without heavy cream?
Yes. Half-and-half can be used for a lighter sauce, although it may not become quite as rich or thick.
Can I add vegetables?
Yes. Spinach, broccoli, mushrooms, asparagus, bell peppers, and zucchini can all work well.
Why did my sauce become too thick?
The sauce can thicken as it cools and again while baking. If necessary, loosen it with a small amount of warm broth, milk, cream, or reserved pasta water.
Can I prepare this casserole ahead of time?
Yes. Prepare the pasta and sauce ahead of time and refrigerate them. For the best texture, add the seasoned shrimp shortly before baking.
How do I know when the shrimp are done?
The shrimp should be opaque and firm, with a pink exterior. For a precise check, the internal temperature should reach approximately 145°F (63°C).
Final Thoughts
Creamy Garlic Parmesan Shrimp Casserole is a comforting combination of tender shrimp, perfectly cooked pasta, rich garlic cream sauce, Parmesan, and golden mozzarella.
It is easy enough for a weeknight dinner but impressive enough for guests. With a few simple ingredients and one baking dish, you can create a creamy seafood casserole that is flavorful, filling, and incredibly satisfying.