Name: Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: Italian
Ingredients: 300 g penne pasta (cooked al dente); 1 green bell pepper (diced); 1 red onion (diced); 2 tsp salt (divided); 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; 1 tsp black pepper; Freshly chopped parsley (a handful); Grated Parmesan for topping

If you’re looking for a meal that brings together simplicity, bold flavors, and a comforting creamy texture, this Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe is going to become your new favorite. It’s the perfect combination of al dente penne pasta enveloped in a luscious pesto-infused cream sauce, brightened up with fresh vegetables and herbs. Best of all, it all comes together in just one pot, meaning less mess and more time enjoying every bite. Whether you’re cooking for a busy weeknight or a casual get-together, this dish feels special without any fuss.

Ingredients You’ll Need

A white bowl holds two layers of chopped vegetables on a white marbled surface. The bottom layer consists of small, bright green bell pepper pieces spread evenly across the bowl’s base. On top, there is a pile of finely chopped red onions with purple and white colors, slightly covering parts of the green peppers. A small amount of liquid, possibly oil or juice, is visible around the vegetables, adding a slight shine to the scene. The lighting highlights the fresh and crisp textures of the vegetables. photo taken with an iphone --ar 4:5 --v 7

This recipe shines because it uses straightforward, pantry-friendly ingredients that work together to create layers of flavor, texture, and color. Each ingredient plays an essential role in making the sauce creamy, tangy, and delightfully fresh.

300 g penne pasta (cooked al dente): The perfect pasta shape to hold onto the creamy sauce in every bite.
2 tsp salt (divided): Brings out natural flavors in the vegetables and pasta.
1 green bell pepper (diced): Adds a crunchy, slightly sweet freshness and a pop of vibrant color.
1 red onion (diced): Provides a subtle sweetness that deepens when caramelized.
6 tbsp pesto sauce: The star flavor—herbaceous, nutty, and packed with basil goodness.
1/2 cup reserved pasta water: Helps thin the sauce and binds everything together with that perfect silky texture.
2 cups heavy cream (35%): Gives the sauce its indulgent creaminess that hugs the pasta beautifully.
1 1/2 tbsp all-purpose flour: Thickens the sauce just enough to keep it rich without being heavy.
1 tbsp garlic powder: Adds a warm, savory depth without overpowering the freshness of pesto.
1 tbsp dried oregano: Brings a hint of earthiness and a Mediterranean flair.
Freshly chopped parsley (a handful): Brightens the dish with a fresh, herbaceous kick.
1 tsp black pepper: Adds subtle heat and balances the flavors perfectly.
Grated Parmesan for topping (optional): A salty, nutty finish that elevates the creaminess even more.

TIP

You’ll find the full ingredient list, instructions, and print option in the recipe card below.

How to Make Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe

Step 1: Sauté the Vegetables

Start by heating a large pan over medium heat, then add the diced green bell pepper and red onion along with 1 teaspoon of salt. Give the vegetables some love with occasional stirring for about 10 minutes, allowing them to soften and become lightly caramelized. This slow sauté deepens the flavors, giving the dish its perfect base.

Step 2: Prepare the Pesto Sauce

Once your veggies are soft and golden, stir in the vibrant pesto sauce and the reserved pasta water. Let everything simmer together gently for around 5 minutes. As the water reduces, the sauce thickens slightly, merging those fresh, herb-packed notes with tender vegetables beautifully.

Step 3: Create the Creamy Base

In a small cup or bowl, whisk the all-purpose flour with a splash of warm water until it forms a smooth slurry—this helps prevent clumps in your sauce. Remove the pan from the heat momentarily, then gradually stir the slurry into the pesto mixture. When it’s smoothly combined, return the pan to medium heat and pour in the heavy cream. Let it gently simmer for 5 to 10 minutes as you stir often, watching the sauce thicken into that luscious, velvety texture.

Step 4: Season the Sauce

Now it’s time to build on the flavor by adding garlic powder, dried oregano, a handful of freshly chopped parsley, and black pepper. Stir well, taste, and adjust seasoning if needed with a bit more salt or pepper. These herbs and spices bring layers of aroma and a touch of freshness that elevate the creamy pesto sauce to the next level.

Step 5: Combine Pasta and Sauce

Gently toss the cooked al dente penne pasta into the sauce, allowing it to soak up all that creamy, pesto-infused goodness. Let everything simmer together for about 5 minutes—this step is where the magic happens and all those delicious flavors meld perfectly.

Step 6: Serve and Enjoy

Dish out generous portions onto plates or bowls, and if you’re feeling fancy, sprinkle freshly grated Parmesan on top. A little extra parsley garnish gives it a fresh and pretty finish. Now take a moment to savor every creamy, herbaceous bite of your homemade Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe!

How to Serve Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe

The image shows a white shallow pan filled with creamy pasta and a single cooked, sliced piece of chicken placed in the center. The pasta is short tube-shaped and covered in a thick light green sauce with visible herbs, giving it a textured look. The chicken slices are arranged neatly side by side, showing a golden-brown cooked exterior with a smooth surface. The pan sits on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Adding garnishes can take your pasta from simple to stunning. Freshly chopped parsley adds a pleasant burst of green color and fresh herb aroma. Grated Parmesan cheese is optional but highly recommended—it adds a salty richness that enhances the creamy pesto sauce perfectly. For an extra touch, a sprinkle of crushed red pepper flakes can introduce a subtle heat for those who enjoy a little kick.

Side Dishes

This creamy pasta stands beautifully on its own but pairs wonderfully with light side dishes. A crisp green salad with lemon vinaigrette balances the richness on the plate. Garlic bread or warm crusty baguette is perfect for mopping up every last bit of sauce. Roasted or steamed seasonal vegetables also make excellent companions, adding texture and nutrition.

Creative Ways to Present

Serving your Creamy Pesto Sauce Pasta with a flourish can make any meal feel like a special occasion. Try plating it in shallow bowls for a rustic look, or twirl it onto plates using tongs to create elegant nests. Garnishing with edible flowers or microgreens can add delicate colors and an upscale touch. For gatherings, serving it family-style in a large pasta bowl invites sharing and sparks happy conversation.

Make Ahead and Storage

Storing Leftovers

You can refrigerate leftover Creamy Pesto Sauce Pasta in an airtight container for up to 3 days. To keep the sauce from thickening too much, it’s helpful to stir in a splash of milk or reserved pasta water before reheating.

Freezing

This dish is best enjoyed fresh, but you can freeze leftovers if needed. Place the pasta in a freezer-safe container, leaving some space for expansion. It will keep well for up to 1 month. When thawing, do so overnight in the fridge for best texture.

Reheating

Reheat gently on the stovetop over low heat, adding a little cream, milk, or pasta water to loosen the sauce. Stir continuously to prevent sticking or burning. Alternatively, microwave in short bursts, stirring between intervals to evenly warm the pasta and maintain that creamy consistency.

FAQs

Can I use another type of pasta for this recipe?

Absolutely! While penne is perfect for holding the sauce, fusilli, rigatoni, or even farfalle would work beautifully. Just make sure to cook the pasta al dente for the best texture.

Is it possible to make this recipe vegan or dairy-free?

Yes, you can swap the heavy cream with full-fat coconut milk or a plant-based cream alternative. Use vegan pesto and skip the Parmesan cheese or use a vegan cheese substitute to keep it dairy-free.

Can I prepare the pesto sauce from scratch?

Definitely! Fresh homemade pesto with basil, pine nuts, garlic, Parmesan, and olive oil will make this dish even more vibrant. However, store-bought pesto is a great time-saver with excellent flavor.

What if I don’t have heavy cream on hand?

You can use whole milk thickened with a bit of butter and flour, or a half-and-half mixture, but expect a slightly lighter sauce. Heavy cream is best for that rich, velvety texture.

How can I make this dish spicier?

Add crushed red pepper flakes while seasoning the sauce, or top with sliced fresh chili peppers. A dash of hot sauce can also bring in some heat without overpowering the pesto flavor.

Final Thoughts

This Creamy Pesto Sauce Pasta (Easy One-Pot Recipe) Recipe is all about celebrating bold, fresh flavors with minimal cleanup. It’s a wonderful way to bring comforting creaminess and vibrant herbs to your table quickly and effortlessly. I encourage you to give it a try and watch it become a staple in your weeknight dinner rotation. Happy cooking and even happier eating!