Name: Instant Pot Spaghetti with Shrimp Scampi
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Italian
Ingredients: 8-10 oz shrimp (raw, peeled, and deveined); 1 tbsp olive oil; 2 tbsp butter; 2 garlic cloves, minced; 1 tsp lemon zest; 2 tbsp lemon juice; 1/2 tsp salt; 1/2 tsp pepper; 2 cups chicken stock; 1 cup water; 12 oz spaghetti (broken in halves); 1 garlic clove, minced; 1 tbsp butter; 1 cup Parmesan cheese (grated); 1/4 tsp chili flakes; Basil leaves or parsley; Lemon wedges

This efficient one-pot meal combines succulent garlic butter shrimp with perfectly cooked spaghetti. It is a convenient dinner solution that minimizes cleanup while delivering rich, buttery flavors in under 30 minutes.

List of ingredients

8-10 oz shrimp – raw, peeled, and deveined (frozen and defrosted also work)
1 tbsp olive oil – for sautéing the shrimp
2 tbsp butter – for the initial shrimp sear
2 garlic cloves, minced – for the scampi base
1 tsp lemon zest – from about half a lemon
2 tbsp lemon juice – from about half a lemon
1/2 tsp salt – to season the shrimp
1/2 tsp pepper – for basic seasoning
2 cups chicken stock – provides the cooking liquid and flavor
1 cup water – ensures enough liquid for the pasta
12 oz spaghetti – broken in halves (approximately 340 grams)
1 garlic clove, minced – for additional flavor in the pasta
1 tbsp butter – added to the pasta during pressure cooking
1 cup Parmesan cheese, grated – to thicken and flavor the sauce
1/4 tsp chili flakes – for a hint of spice
Basil leaves or parsley – for fresh garnish
Lemon wedges – for serving

step-by-step instructions

Prepare Shrimp: Pat the shrimp dry with paper towels if they are wet to ensure a better sear.
Sauté Shrimp: Turn the Instant Pot to Saute on Normal. Once hot, add butter and olive oil, then add shrimp in a single layer. Sauté for 2 minutes, stirring once, then stir in garlic, lemon zest, lemon juice, salt, and pepper for another 1 to 2 minutes.
Deglaze Pot: Remove the shrimp and set them aside, leaving the brown bits (fond) in the pot. Pour in 2 cups of chicken stock and use a spatula to scrape the bottom thoroughly to prevent a Burn notice and add flavor to the pasta.
Layer Pasta: Break spaghetti into halves and immerse them in the stock, layering them in different directions. Pour 1 cup of water over the top and add a few dollops of butter. Press the noodles down to ensure they are fully covered but do not stir.
Pressure Cook: Secure the lid and set to HIGH pressure for 5 minutes. After the timer ends, allow a natural release for 5 minutes, then perform a quick release for the remaining pressure.
Final Mix: Open the pot and stir the spaghetti. Sprinkle in the Parmesan cheese and stir back in most of the pre-cooked shrimp and their accumulated juices. The residual heat will finish the shrimp and thicken the sauce.
Serve: Plate the pasta, top with the remaining shrimp, and garnish with chopped parsley, basil, and lemon wedges.

Practical Cooking Tips

Selecting the Best Shrimp

Use large raw shrimp that have been peeled and deveined for the best results. If using frozen shrimp, thaw them in a bowl of warm water for 10-15 minutes. Always pat them dry before sautéing to prevent them from steaming in the pot.

Managing the Burn Notice

The fond, or brown bits left after sautéing shrimp, is packed with flavor but can cause a Burn warning. Deglazing with chicken stock and scraping the bottom with a spatula ensures these bits are incorporated into the liquid. This step is essential for a successful pressure cooking cycle.

Optimizing Pasta Layering

Avoid stirring the pasta after adding it to the liquid. Instead, layer the broken spaghetti in a crisscross pattern to prevent the noodles from clumping together. Pressing them down ensures every strand is submerged in the broth.

Timing the Pressure Release

A 5-minute natural release is critical for achieving the correct pasta texture. Releasing the pressure too quickly can cause the pasta to be unevenly cooked or burst through the steam valve. Following the 5-minute wait ensures an al dente finish.

Ingredient Substitutions

Alternative Pasta Varieties

Linguine or fettuccine can be substituted for spaghetti. Because these noodles are wider, you may need to increase the pressure cooking time by one minute. Ensure they are also broken in half to fit the pot properly.

Broth and Liquid Options

Vegetable broth can be used instead of chicken stock for a lighter flavor. If you prefer a lower sodium meal, use low-sodium broth or a homemade stock to control the salt levels.

Dairy-Free Modifications

For a dairy-free version, replace butter with a plant-based butter alternative. Substitute the Parmesan cheese with nutritional yeast or a vegan Parmesan substitute to maintain the savory, salty profile.

Adjusting the Acidity

If fresh lemons are unavailable, bottled lemon juice is a practical substitute. However, you will miss the aromatic qualities of the zest, so consider adding a pinch of extra lemon-flavored seasoning if needed.

Serving Suggestions

Complementary Side Dishes

Warm garlic bread is an ideal pairing to soak up the buttery scampi sauce. A light green salad with a simple vinaigrette also provides a refreshing contrast to the richness of the cheese and butter.

Integrating Fresh Vegetables

You can add baby spinach or frozen peas at the very end of the process. Stir them in with the Parmesan cheese, and the residual heat will cook them through without making them mushy.

Garnish and Finishing Touches

Freshly chopped parsley or basil adds a bright, herbaceous note to the dish. Adding extra lemon wedges on the side allows guests to adjust the acidity to their personal preference.

Vegetable Pairing Ideas

Roasted asparagus, steamed broccoli, or sautéed zucchini are excellent nutritional additions. These vegetables complement the garlic and lemon flavors of the shrimp scampi.

Storage and Reheating

Refrigeration Guidelines

Leftover spaghetti can be stored in an airtight container in the refrigerator for up to 2 days. Note that the pasta will continue to absorb the sauce as it cools, which may make it appear drier.

Best Reheating Methods

To reheat, place the pasta in a skillet or microwave and add a splash of chicken stock or water. This helps loosen the noodles and restores the creamy consistency of the butter and cheese sauce.

Freezing Advice

This dish is not recommended for freezing. The starch in the pasta changes structure during the freezing and thawing process, which often results in a grainy texture and separated sauce.

Troubleshooting Common Issues

Correcting Mushy Pasta

If the pasta comes out too soft, reduce the high-pressure cooking time by one minute in your next attempt. Also, ensure you do not exceed the 5-minute natural release window.

Fixing a Thin Sauce

If the sauce is too watery after cooking, stir in an extra handful of Parmesan cheese. Let the dish sit for 2-3 minutes before serving, as the sauce thickens as it cools slightly.

Preventing Overcooked Shrimp

Ensure the shrimp are only sautéed until they just turn opaque. Since they are returned to the hot pasta at the end, they will finish cooking through residual heat without becoming rubbery.

Frequently Asked Questions

Can I use fresh shrimp instead of frozen?

Yes, fresh shrimp work perfectly. Just ensure they are peeled and deveined before you begin the sautéing process to keep the cooking time consistent.

Do I really have to break the spaghetti?

Breaking the noodles in half is necessary for the Instant Pot. It allows the pasta to be submerged completely in the liquid, which prevents uneven cooking and clumping.

Will this recipe work in a 6-quart or 8-quart pot?

This recipe is designed to work in both 6-quart and 8-quart Instant Pots. The key is to ensure the liquid fully covers the pasta, regardless of the pot’s size.

Can I omit the Parmesan cheese?

Yes, the cheese is used for flavor and to help thicken the sauce. If you omit it, you may want to add an extra tablespoon of butter or a splash of cream to maintain the richness.

How do I prevent the shrimp from sticking to the pot?

Ensure the butter and olive oil are fully heated before adding the shrimp. Avoid stirring the shrimp too frequently; let them sear undisturbed for a couple of minutes to create a proper crust.