Best Yellow Squash Pasta

I’ve been making this yellow squash pasta on repeat lately, and I can’t get enough of how the tender squash rounds practically melt into the garlicky parmesan sauce. With just a handful of simple ingredients like fresh garlic and good quality parmesan, this weeknight dinner comes together in about 30 minutes and tastes like something you’d order at your favorite Italian spot. Trust me, this is about to become your new go-to pasta recipe!

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 2100-2300
• Protein: 65-75 g
• Fat: 60-70 g
• Carbohydrates: 330-350 g

Ingredients

For the pasta:

• 1 lb pasta (I always use Barilla for a perfect al dente bite)

For the squash sauce:

• 4 tsp olive oil
• 7 cups squash (sliced into 1/4-inch rounds)
• 1/2 large onion, diced
• 4 garlic cloves (freshly minced for best flavor)
• 1 1/4 cups parmesan (I prefer Sargento off-the-block for its meltability)
• 1 1/4 tsp salt
• 3/4 tsp black pepper
• 1/4 tsp crushed red pepper flakes
• 1 tbsp lemon juice

For the garnish:

• 1/4 cup fresh parsley, chopped

Step 1: Prepare Ingredients and Start Pasta

• 1 lb pasta
• 7 cups squash
• 1/2 large onion, diced
• 4 garlic cloves, freshly minced

While you're gathering everything, bring a large pot of salted water to a boil and add the pasta, cooking it until just al dente according to package directions.

Before draining, reserve 1 cup of the starchy pasta water—this is crucial for adjusting the sauce consistency later.

While the pasta cooks, slice the squash into 1/4-inch rounds, dice the onion, and mince the garlic cloves.

Freshly minced garlic makes a noticeable difference in flavor compared to pre-minced, so it's worth the extra minute.

Step 2: Sauté Squash Until Golden and Tender

• 4 tsp olive oil
• 1/2 large onion, diced
• 7 cups squash
• 4 garlic cloves, freshly minced
• 1 1/4 tsp salt
• 3/4 tsp black pepper
• 1/4 tsp crushed red pepper flakes

Heat the olive oil in a large pan over medium-high heat and add the diced onion, cooking for about 1 minute until just starting to soften.

Add the sliced squash, minced garlic, salt, black pepper, and crushed red pepper flakes, then cook for 15-20 minutes, stirring occasionally, until the squash is completely tender and deeply browned on the edges.

The browning develops deeper flavor, and the squash will break down significantly, which is exactly what you want for a smooth sauce.

Step 3: Blend Squash into Smooth Sauce Base

• cooked squash mixture from Step 2

Transfer the cooked squash mixture to a blender (working in batches if needed) and blend until completely smooth, creating a velvety sauce base.

I like to leave it slightly warm when blending rather than letting it cool completely, as it blends more easily and the warmth helps the cheese melt evenly in the next step.

Step 4: Build the Sauce with Cheese and Pasta

• blended squash puree from Step 3
• 1 1/4 cups parmesan, grated
• cooked pasta from Step 1
• reserved pasta water as needed

Pour the blended squash back into the large pan over low heat and stir in the grated Parmesan cheese, mixing constantly until the cheese melts completely and the sauce becomes creamy and cohesive.

I prefer grating Parmesan from a block rather than using pre-shredded, as it melts more smoothly without any cellulose additives.

Add the cooked pasta from Step 1 and fold it gently into the sauce.

If the mixture seems too thick, add reserved pasta water 1/4 cup at a time, stirring well between each addition, until you reach a silky, coating consistency.

Step 5: Finish and Serve

• pasta mixture from Step 4
• 1 tbsp lemon juice
• 1/4 cup fresh parsley, chopped

Remove the pan from heat and stir in the lemon juice, which brightens the squash flavor and cuts through the richness of the cheese.

Taste and adjust seasoning with additional salt and pepper as needed.

Fold in the fresh chopped parsley just before serving to maintain its vibrant color and fresh flavor.

Best Yellow Squash Pasta

Delicious Best Yellow Squash Pasta recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 25 minutes mins

Total Time 37 minutes mins

Servings: 6 servings

Calories: 2200

Ingredients Method

Ingredients

  

For the pasta

• 1 lb pasta (I always use Barilla for a perfect al dente bite)

For the squash sauce

• 4 tsp olive oil
• 7 cups squash (sliced into 1/4-inch rounds)
• 1/2 large onion, diced
• 4 garlic cloves (freshly minced for best flavor)
• 1 1/4 cups parmesan (I prefer Sargento off-the-block for its meltability)
• 1 1/4 tsp salt
• 3/4 tsp black pepper
• 1/4 tsp crushed red pepper flakes
• 1 tbsp lemon juice

For the garnish

• 1/4 cup fresh parsley, chopped

Method

 

1. While you're gathering everything, bring a large pot of salted water to a boil and add the pasta, cooking it until just al dente according to package directions. Before draining, reserve 1 cup of the starchy pasta water—this is crucial for adjusting the sauce consistency later. While the pasta cooks, slice the squash into 1/4-inch rounds, dice the onion, and mince the garlic cloves. Freshly minced garlic makes a noticeable difference in flavor compared to pre-minced, so it's worth the extra minute.
2. Heat the olive oil in a large pan over medium-high heat and add the diced onion, cooking for about 1 minute until just starting to soften. Add the sliced squash, minced garlic, salt, black pepper, and crushed red pepper flakes, then cook for 15-20 minutes, stirring occasionally, until the squash is completely tender and deeply browned on the edges. The browning develops deeper flavor, and the squash will break down significantly, which is exactly what you want for a smooth sauce.
3. Transfer the cooked squash mixture to a blender (working in batches if needed) and blend until completely smooth, creating a velvety sauce base. I like to leave it slightly warm when blending rather than letting it cool completely, as it blends more easily and the warmth helps the cheese melt evenly in the next step.
4. Pour the blended squash back into the large pan over low heat and stir in the grated Parmesan cheese, mixing constantly until the cheese melts completely and the sauce becomes creamy and cohesive. I prefer grating Parmesan from a block rather than using pre-shredded, as it melts more smoothly without any cellulose additives. Add the cooked pasta from Step 1 and fold it gently into the sauce. If the mixture seems too thick, add reserved pasta water 1/4 cup at a time, stirring well between each addition, until you reach a silky, coating consistency.
5. Remove the pan from heat and stir in the lemon juice, which brightens the squash flavor and cuts through the richness of the cheese. Taste and adjust seasoning with additional salt and pepper as needed. Fold in the fresh chopped parsley just before serving to maintain its vibrant color and fresh flavor.