Creamy Pesto Sauce Pasta is the dinner that saves the evening when everyone is hungry and nobody wants to wait. Lucia keeps a jar of good pesto in the refrigerator at all times the way some people keep emergency chocolate. She says it is the most useful ingredient in any kitchen because it already contains everything you need, the garlic, the basil, the olive oil, the Parmesan, all of it concentrated into a single spoonful that transforms whatever it touches.
Maria discovered this pasta on a Tuesday when the refrigerator held very little and the cupboard held penne, and by the time Teresa came home from her evening walk the whole apartment smelled like a proper Italian kitchen and dinner was already on the table.
Creamy Pesto Sauce Pasta is everything a weeknight dinner should be. One pan, a handful of simple ingredients, thirty minutes from start to finish, and a bowl of pasta in a silky rich pesto cream sauce that coats every piece of penne so completely and so generously that the last bite tastes exactly as good as the first. Sautéed green bell pepper and red onion slow-cooked until caramelized and sweet form the flavor base.
Pesto and reserved pasta water create the aromatic heart of the sauce. Heavy cream and a simple flour slurry bring it all together into the creamiest most satisfying one pot dinner you have ever made on a weeknight. Come follow us on Pinterest where we share beautiful and effortless recipes like this one from our kitchen every single week.
Table of Contents
Why You Will Love This Creamy Pesto Sauce Pasta Recipe
This Creamy Pesto Sauce Pasta recipe is the definition of maximum flavor for minimum effort and it delivers on that promise every single time. The technique of sautéing the bell pepper and red onion low and slow until they are soft and lightly caramelized builds a depth of sweet savory flavor into the base of the sauce that you simply cannot rush and cannot achieve any other way. That foundation is what elevates this pasta from a quick dinner into something genuinely worth sitting down for.
The combination of pesto and heavy cream creates a sauce that is rich and herbaceous and aromatic all at once. The starchy pasta water adds body and helps the sauce cling to every groove and surface of the penne beautifully. It is one pan from start to finish which means less washing up and more time at the table. Our Margherita Pizza makes a wonderful simple Italian companion alongside this pasta for a full and satisfying weeknight dinner that feels completely effortless.
Ingredients Needed for This Creamy Pesto Sauce Pasta Recipe
- 300g (about 10 oz) Penne Pasta, cooked al dente
- 2 tsp Salt, divided
- 1 Green Bell Pepper, diced
- 1 Red Onion, diced
- 6 tbsp Pesto Sauce
- ½ cup Reserved Pasta Water
- 2 cups Heavy Cream (35%)
- 1½ tbsp All-Purpose Flour
- 1 tbsp Garlic Powder
- 1 tbsp Dried Oregano
- A generous handful of Fresh Parsley, chopped
- 1 tsp Black Pepper
- Grated Parmesan for topping (optional)
How to Make This Creamy Pesto Sauce Pasta Recipe
Begin by cooking your penne pasta in a large pot of generously salted boiling water until al dente according to the package directions. Before draining, scoop out at least half a cup of the starchy pasta cooking water and set it aside. This is essential for the sauce and worth remembering every single time, cara mia. Drain the pasta and set aside.
Heat a large skillet or braiser over medium heat. Add the diced green bell pepper and diced red onion with 1 teaspoon of the salt. Sauté for about 10 minutes, stirring occasionally, until the vegetables are completely softened and beginning to caramelize at the edges. Do not rush this step. The caramelization is where the deep sweet savory flavor that makes this sauce so much better than a basic pesto cream comes from. Low and slow is the way.
Once the vegetables are beautifully softened, add the pesto sauce and the reserved pasta water to the pan and stir to combine everything. Allow the mixture to simmer for about 5 minutes, stirring occasionally, until the sauce has reduced slightly and the pasta water has mostly evaporated into a fragrant concentrated pesto base.
In a small cup or bowl, whisk together the flour with a few tablespoons of warm water until completely smooth with no lumps. This is your slurry and it is the key to a creamy sauce that thickens without becoming gluey or grainy. Remove the pan from the heat briefly and stir the slurry into the sauce gradually, mixing continuously as you add it. Once fully incorporated, return the pan to medium heat and pour in the heavy cream. Stir well to combine everything and allow the sauce to simmer for 5 to 10 minutes, stirring frequently, until it thickens into a rich and glossy cream sauce that coats the back of a spoon beautifully.
Add the garlic powder, dried oregano, freshly chopped parsley, remaining salt, and black pepper to the sauce. Stir well and taste, adjusting the seasoning as needed. Add the cooked penne pasta directly to the pan and toss everything together until every piece is fully coated in the creamy pesto sauce. Allow the pasta to simmer in the sauce for about 5 minutes so it absorbs the flavors fully and the whole dish comes together as one cohesive and deeply delicious meal. Serve immediately in warm bowls topped with freshly grated Parmesan and a scattering of extra chopped parsley.
How to Serve This Creamy Pesto Sauce Pasta Recipe
Serve this pasta immediately in generous bowls while the sauce is at its creamiest and most fragrant. A final scatter of freshly grated Parmesan over each bowl is not optional in our kitchen, it is the finishing touch that takes the dish from very good to completely irresistible. A slice of good crusty bread alongside for mopping up every last drop of the pesto cream sauce is equally essential. For a more substantial dinner, top each bowl with thinly sliced cooked chicken breast or a few crispy pan-fried shrimp. Our Lemon Pasta makes a beautiful and bright companion dish that celebrates Italian pasta in a completely different direction alongside this rich and creamy pesto version.
How to Store This Creamy Pesto Sauce Pasta Recipe
Store leftovers in an airtight container in the refrigerator for up to 3 days. When reheating, add a generous splash of heavy cream or a little water to the pasta in a saucepan over low heat and stir gently until the sauce comes back together and the pasta is warmed through. The sauce will thicken considerably in the refrigerator overnight but loosens beautifully with just a small amount of added liquid. To freeze, store the cooled pasta in a freezer-safe airtight container for up to 2 months. Thaw overnight in the refrigerator before reheating gently on the stovetop with a splash of cream. For the very best texture and flavor this dish is ideally made and served fresh.
Tips to Make This Creamy Pesto Sauce Pasta Recipe
Always reserve your pasta water before draining. The starch in the pasta water is what helps the cream sauce bind and cling to the pasta properly and gives the finished dish that silky restaurant-quality consistency. A full half cup set aside before draining is the minimum. Whisk the flour slurry until it is completely smooth and lump-free before adding it to the pan. Any lumps in the slurry will become lumps in the sauce and there is no recovering from that once the cream is added.
Take the pan off the heat before adding the slurry and stir it in gradually for the smoothest possible result. Use a good quality pesto for this recipe. Since the pesto is the primary flavor of the entire sauce, the quality you put in is exactly the quality you will taste in every single bite.
Helpful Notes for This Creamy Pesto Sauce Pasta Recipe
The flour slurry technique used in this recipe is a particularly useful tool for thickening cream-based pasta sauces without the risk of the cream breaking or the sauce becoming too thin. Unlike adding flour directly to the pan which can cause lumps, whisking it with warm water first creates a completely smooth paste that incorporates into the sauce evenly and thickens it gradually as it simmers. If you prefer a gluten-free version, cornstarch works equally well as a substitute in the same quantity. For a lighter sauce, half-and-half can be substituted for the heavy cream and the result is still beautifully creamy, just a little less rich and indulgent.
Variation of This Creamy Pesto Sauce Pasta Recipe
Maria made a version with sun-dried tomatoes added to the pan alongside the bell pepper and onion and the concentrated sweetness of the tomatoes woven through the pesto cream was one of the most deeply satisfying things she has ever put in a pasta bowl. Teresa tried a version with baby spinach stirred into the finished sauce at the very last moment before serving and the bright green wilted leaves looked beautiful against the creamy pesto sauce and added a lovely freshness to each bite.
For a heartier version, add a drained and rinsed can of white cannellini beans to the sauce alongside the pasta for a creamy pesto pasta e fagioli that is filling and wonderfully comforting. Our Sausage and Egg Casserole makes a wonderfully hearty and satisfying companion for a full and comforting family dinner alongside this creamy pasta.
FAQs About This Creamy Pesto Sauce Pasta Recipe
Can I make this pasta ahead of time?
Yes. The sauce can be made up to 3 days in advance and stored in an airtight container in the refrigerator. Cook the pasta fresh when you are ready to serve and toss it with the reheated sauce for the best texture and the freshest presentation. Pasta that sits in cream sauce overnight will absorb the sauce and become softer which some people enjoy but if you prefer the penne to hold its shape and texture, keeping the pasta and sauce separate until serving is the better approach.
Can I use homemade pesto instead of store-bought?
Absolutely and if you have the time to make it we strongly encourage it. Homemade basil pesto made with fresh basil, good olive oil, toasted pine nuts, garlic, and Parmesan has a brightness and depth of flavor that most commercial pestos cannot fully replicate. Use it in the same quantity as the store-bought version called for in this recipe.
What pasta shapes work best in this recipe?
Short pasta shapes with ridges or curves work best because they grip the creamy pesto sauce and carry it beautifully in every bite. Penne rigate, rigatoni, fusilli, and farfalle are all excellent choices. Long pasta like spaghetti or linguine will work but does not hold the thick cream sauce as effectively as the short ridged shapes do.
Conclusion
This Creamy Pesto Sauce Pasta is the weeknight dinner we turn to again and again when we want something that feels genuinely special without asking anything more of us than one pan and thirty minutes of our evening. It is warm and rich and deeply satisfying in exactly the way a great bowl of pasta should be. We hope it becomes as beloved and relied upon in your kitchen as it has become in ours. Make it, share it, and come back to tell us all about it. With all our love, Maria, Lucia, and Teresa.
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Creamy Pesto Sauce Pasta The Most Delicious and Effortless One Pot Dinner
- Total Time: 30 minutes
- Yield: 4 servings 1x
- Diet: Vegetarian
Description
The most delicious and effortless Creamy Pesto Sauce Pasta made in one pan with caramelized bell pepper and red onion, rich pesto, heavy cream, and penne pasta. On the table in 30 minutes and absolutely irresistible from the very first bite.
Ingredients
300g Penne Pasta cooked al dente
2 tsp Salt divided
1 Green Bell Pepper diced
1 Red Onion diced
6 tbsp Pesto Sauce
1/2 cup Reserved Pasta Water
2 cups Heavy Cream 35%
1 1/2 tbsp All-Purpose Flour
1 tbsp Garlic Powder
1 tbsp Dried Oregano
A generous handful of Fresh Parsley chopped
1 tsp Black Pepper
Grated Parmesan for topping optional
Instructions
1. Cook penne in salted boiling water until al dente. Reserve 1/2 cup pasta water before draining. Set pasta aside.
2. Heat large skillet over medium heat. Add diced bell pepper and red onion with 1 tsp salt.
3. Sauté for 10 minutes stirring occasionally until softened and lightly caramelized.
4. Add pesto sauce and reserved pasta water. Stir to combine and simmer 5 minutes until slightly reduced.
5. Whisk flour with a few tablespoons warm water until completely smooth to form a slurry.
6. Remove pan from heat and stir in slurry gradually. Return to medium heat and pour in heavy cream.
7. Simmer 5 to 10 minutes stirring frequently until sauce thickens and coats a spoon.
8. Add garlic powder, oregano, parsley, remaining salt, and black pepper. Stir and adjust seasoning.
9. Add cooked penne and toss to coat. Simmer together 5 minutes until pasta absorbs the sauce.
10. Serve immediately topped with freshly grated Parmesan and extra chopped parsley.
Notes
Always reserve pasta water before draining for the silkiest sauce.
Whisk flour slurry completely smooth before adding to avoid lumps.
Remove pan from heat when adding slurry to prevent clumping.
Use good quality pesto as it is the primary flavor of the entire sauce.
Sauce can be made up to 3 days ahead and stored separately in the refrigerator.
- Prep Time: 5 minutes
- Cook Time: 25 minutes
- Category: Main Course
- Method: Stovetop
- Cuisine: Italian
Nutrition
- Serving Size: 1 serving
- Calories: 620
- Sugar: 5g
- Sodium: 480mg
- Fat: 38g
- Saturated Fat: 20g
- Unsaturated Fat: 16g
- Trans Fat: 0g
- Carbohydrates: 55g
- Fiber: 3g
- Protein: 14g
- Cholesterol: 90mg
Keywords: creamy pesto sauce pasta, one pot pesto pasta, easy pesto pasta recipe, weeknight pasta dinner
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