This is a blender dressing built from pantry staples โ mayonnaise, white vinegar, Parmesan, Romano, and a short list of dried herbs โ that closely mimics the creamy, tangy Italian dressing served at Olive Garden. It takes 7 minutes start to finish. That alone makes it worth keeping in your rotation.
Before you start
The only real technique here is the blend. Pulse until the mixture is completely smooth โ any unblended chunks of Parmesan or Romano will leave the dressing gritty rather than creamy. Give it a taste before you seal the jar: the balance between the vinegarโs sharpness and the richness of the mayo is the whole point of this dressing, and you can dial it in right now with the optional pinch of sugar rather than after itโs been sitting in the fridge. Dress it at the table โ a pre-dressed salad goes limp fast.
Ingredient notes
- White vinegar: This is sharper than red wine or apple cider vinegar. Donโt swap it out โ that brightness is what makes the dressing taste right on a cold, crisp salad.
- Light corn syrup: It does more than add sweetness; it gives the dressing a slightly glossy body that helps it cling to leaves. In a pinch, an equal amount of honey works, though it adds a faint floral note.
- Romano cheese: Sharper and saltier than Parmesan. If you only have Parmesan, use the full 4 tablespoons of Parmesan instead of splitting it โ but taste for salt before adding any extra.
- Vegetable oil: Just 1 teaspoon, so the mayo is doing most of the emulsifying work. Any neutral oil is fine.
Common problems and fixes
- Dressing is too thick to pour: Add cold water a teaspoon at a time and pulse again until it reaches a pourable consistency. Donโt add more oil โ itโll make it richer, not thinner.
- Too salty after refrigerating: Salt perception increases as a dressing chills. If it tastes sharp straight from the fridge, let it sit at room temperature for 5 minutes before serving, or stir in a small squeeze of extra lemon juice to rebalance.
- Dressing separates in the jar: This is normal after a day or two. Shake the jar firmly for 10โ15 seconds before each use โ it will come back together.
- Garlic flavor is too mild: Garlic salt is subtle here. If you want a stronger garlic hit, add a small pinch of garlic powder in addition to the garlic salt โ but go carefully, since the salt content adds up fast.
- Dressing tastes flat overall: A flat dressing usually needs acid, not salt. Add a few more drops of lemon juice and blend briefly before adjusting anything else.
Keeping it fresh
Store the dressing in a sealed jar or airtight container in the refrigerator for up to 10 days. Because itโs mayonnaise-based, keep it cold and donโt leave it sitting out at the table for more than 30 minutes. The dressing itself holds well, but if youโre building a full salad ahead of time, keep the dressing separate and add it just before serving โ this is especially important with romaine or iceberg, which release water quickly once dressed and turn soggy within 15 minutes.
Olive Garden Salad Dressing
Ingredients
- ยฝ cup mayonnaise
- โ cup white vinegar
- 1 teaspoon vegetable oil
- 2 tablespoons corn syrup light
- 2 tablespoons Parmesan cheese grated
- 2 tablespoons Romano cheese grated
- ยผ teaspoon garlic salt
- ยฝ teaspoon dried Italian seasoning
- ยฝ teaspoon dried parsley flakes
- 1 tablespoon lemon juice
- 1 pinch sugar optional
Instructions
- Place all of the ingredients onto a blender and pulse thoroughly until everything is smooth with no chunks.
- If it tastes a bit too vinegary to you, add a pinch of sugar to lessen the acidic taste.
- Keep stored in the fridge for up to 10 days.
Notes
Nutrition
FAQ
Can I make this without a blender?
Yes, but the texture will be different. Whisk everything together in a bowl until smooth, and make sure both cheeses are finely grated โ coarse grated cheese wonโt fully incorporate by hand and will leave the dressing grainy.
Can I use this dressing as a marinade?
Yes, it works well as a marinade for vegetables or chicken before grilling or roasting. The vinegar and lemon juice help tenderize, and the herbs and cheese give good flavor โ marinate for 30 minutes to 2 hours in the fridge.
Is there a lighter version I can make?
You can swap the mayonnaise for a half-and-half mix of regular mayo and plain Greek yogurt to cut some of the fat while keeping the creamy texture. The dressing will be slightly tangier, so start with a small pinch of sugar to balance it.