Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe
There’s something magical about the creamy pesto dressing from the Old Spaghetti Factory that makes every salad a bit more special. It’s rich, flavorful, and just the right amount of tangy. If you’ve ever wanted to recreate that delightful taste at home, you’re in luck! This Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe is incredibly simple to whip up and brings that restaurant flavor right to your kitchen. Perfect for drizzling over salads, dipping veggies, or even as a sandwich spread, this dressing will quickly become a staple in your home.
Why It’s My Go-To
This dressing is my go-to for so many reasons. First, it’s incredibly versatile—ideal for salads, pasta, or even as a dipping sauce for your favorite appetizers. Second, it uses simple ingredients that you likely have on hand. Lastly, this creamy pesto dressing is a breeze to make, taking just a few minutes to blend together. The best part? It tastes just like the original, making it a perfect addition to any meal!
What’s in the Bowl
To achieve the perfect flavor and texture in this creamy pesto dressing, you’ll need the following ingredients:
- 3/4 cup vegetable oil – This provides the rich, smooth base for the dressing.
- 1 cup mayonnaise – Adds creaminess and a bit of tang.
- 3/4 cup buttermilk – Contributes a delicious tang and thins the dressing to the perfect consistency.
- 2 tablespoons grated Romano cheese – For a salty, cheesy flavor that enhances the pesto.
- 2 tablespoons crushed dried basil – Brings that signature pesto flavor.
- 1/2 teaspoon salt – Enhances all the flavors in the dressing.
- 1 teaspoon minced garlic – Adds a punch of flavor.
- Hot pepper sauce – Just a dash for a kick, adjust to your taste!
Setup & Equipment
Before you dive in, gather your tools to make the process as smooth as possible:
- Mixing bowl – A large bowl will give you enough space to mix everything easily.
- Whisk or blender – Use a whisk for a manual mix or a blender for a super smooth dressing.
- Measuring cups and spoons – Precision is key in getting that perfect flavor.
- Storage container – A jar or airtight container for storing your dressing in the fridge.
Step-by-Step: Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe

Step 1: Gather Your Ingredients
Start by measuring out all your ingredients. Having everything ready to go makes the process much smoother.
Step 2: Combine the Base
In a mixing bowl, combine the vegetable oil, mayonnaise, and buttermilk. Whisk them together until smooth and creamy.
Step 3: Add the Flavor Makers
Next, add the grated Romano cheese, crushed dried basil, salt, minced garlic, and a few dashes of hot pepper sauce. Whisk again until all the ingredients are well combined.
Step 4: Taste and Adjust
Give your dressing a taste. This is your chance to adjust the flavor! Add more salt, cheese, or hot sauce according to your palate.
Step 5: Store and Chill
Transfer the dressing to a storage container and seal tightly. Let it chill in the refrigerator for at least 30 minutes to allow the flavors to meld.
Nutrition-Minded Tweaks

If you’re looking to make some adjustments for a healthier version of this Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe, consider these options:
- Greek yogurt – Substitute part of the mayonnaise with Greek yogurt for added protein.
- Olive oil – Use extra virgin olive oil instead of vegetable oil for a healthier fat option.
- Reduced-fat mayonnaise – A lower-calorie alternative to traditional mayonnaise.
- Fresh basil – Use fresh basil instead of dried for a brighter flavor and added nutrients.
What I Learned Testing
Through testing this recipe, I discovered a few key points:
- The quality of your ingredients matters! Using fresh, high-quality oil and cheese can elevate the dressing.
- Letting the dressing chill intensifies the flavors, so don’t skip this step!
- Adjusting the garlic and hot sauce can make a significant difference in flavor, so tailor it to your taste preferences.
Make Ahead Like a Pro
This dressing is perfect for meal prep and can be made ahead of time. Here are some tips for making it a pro:
- Make a batch at the beginning of the week and store it in the fridge for up to a week.
- Double the recipe if you’re hosting a gathering—everyone will love it!
- Consider portioning it out in smaller jars for easy grab-and-go salad dressing during busy weeks.
Top Questions & Answers
Can I use fresh basil instead of dried?
Absolutely! If using fresh basil, you’ll want to use about three times the amount. Fresh herbs provide a vibrant flavor.
How long does this dressing last in the fridge?
This creamy pesto dressing can last up to a week when stored in an airtight container in the refrigerator.
Can I freeze the dressing?
While it’s not recommended to freeze this type of dressing, you can store it in the fridge for up to a week and enjoy it fresh!
What can I use this dressing for besides salad?
This versatile dressing is perfect as a dip for veggies, a spread for sandwiches, or even drizzled over grilled chicken or fish!
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Wrap-Up
This Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe is a delightful way to bring a taste of your favorite restaurant into your home. With just a few simple ingredients and steps, you can whip up a batch that will have everyone asking for seconds. Perfect for salads, sandwiches, or simply as a dip, this dressing is sure to become a favorite in your household. So, roll up your sleeves and get ready to enjoy a deliciously creamy and flavorful dressing that will elevate any meal! Enjoy your culinary adventure, and happy cooking!

Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe
Ingredients
- 3/4 cup vegetable oil provides the rich, smooth base for the dressing
- 1 cup mayonnaise adds creaminess and a bit of tang
- 3/4 cup buttermilk contributes a delicious tang and thins the dressing
- 2 tablespoons grated Romano cheese for a salty, cheesy flavor
- 2 tablespoons crushed dried basil brings that signature pesto flavor
- 1/2 teaspoon salt enhances all the flavors
- 1 teaspoon minced garlic adds a punch of flavor
- hot pepper sauce just a dash, adjust to your taste
Instructions
Old Spaghetti Factory Creamy Pesto Dressing: Easy Copycat Recipe
- Start by measuring out all your ingredients. Having everything ready to go makes the process much smoother.
- In a mixing bowl, combine the vegetable oil, mayonnaise, and buttermilk. Whisk them together until smooth and creamy.
- Add the grated Romano cheese, crushed dried basil, salt, minced garlic, and a few dashes of hot pepper sauce. Whisk again until all the ingredients are well combined.
- Give your dressing a taste. Adjust the flavor by adding more salt, cheese, or hot sauce according to your palate.
- Transfer the dressing to a storage container and seal tightly. Let it chill in the refrigerator for at least 30 minutes to allow the flavors to meld.
Equipment
- Mixing Bowl
- Whisk or blender
- Measuring Cups and Spoons
- Storage container
Notes
- Use fresh, high-quality oil and cheese to elevate the dressing flavor.
- Chill the dressing for at least 30 minutes to intensify the flavors.
- Adjust garlic and hot sauce levels to suit your taste preferences.
- Substitute part of the mayonnaise with Greek yogurt for a healthier version.
- Store the dressing in the fridge up to one week in an airtight container.

