Vegan Lemon Buttermilk Sauce | Creamy Oil-Free Dressing

Add-Ins and Substitutions

This Vegan Lemon Buttermilk Sauce is delicious as written, but it is also easy to adapt depending on how you plan to use it.

Plant-Based Milk
Unsweetened oat milk gives the sauce a smooth, neutral base. You can also use an unsweetened almond or soy milk, but avoid sweetened or strongly flavored varieties.

Plant-Based Yogurt
I use Culina plain plant-based yogurt because it gives the sauce a creamy texture and pleasant tang. Another unsweetened plain plant-based yogurt may be substituted, although the thickness and flavor of the finished sauce may vary slightly by brand.

Make It More Savory
Add a small clove of finely grated garlic, a pinch of garlic powder, or a little freshly ground black pepper when serving it with roasted vegetables, potatoes, wraps, or grain bowls.

Add Fresh Herbs
Fresh dill, basil, parsley, chives, or mint all pair beautifully with lemon. Dill is especially nice for cucumber salads and potatoes, while basil or parsley works well with tomatoes, farro, roasted vegetables, or pasta salads.

Turn Up the Lemon Flavor
For an even brighter, more complex lemon flavor, add a little extra zest or replace a small portion of the fresh lemon juice with California Balsamic’s Lemon Balsamic Vinegar. Lemon zest deepens the citrus aroma without thinning the sauce or making it overly tart, while a splash of lemon balsamic adds a subtly sweet, layered finish that is especially delicious in grain bowls or over roasted vegetables.

Use Vegan Sour Cream for a Thicker Sauce
For a richer, spoonable version, replace some or all of the plant-based yogurt with plain vegan sour cream. This creates a thicker sauce that works especially well as a drizzle for roasted vegetables, baked potatoes, sandwiches, or wraps.

Make It a Dressing
For a slightly thinner salad dressing, whisk in an additional tablespoon or two of unsweetened oat milk until it reaches your preferred pourable consistency.

Storing

Store in an airtight container in the refrigerator for up to 3–4 days. Give it a quick shake or stir before using, as it may separate slightly.

Nutrition 411

This Vegan Lemon Buttermilk Sauce is a simple reminder that creamy sauces do not need oil, dairy or a long ingredient list to bring a meal to life.

Made with unsweetened oat milk, plain plant-based yogurt, fresh lemon juice and lemon zest, it adds bright flavor and gentle creaminess to salads, roasted vegetables, grain bowls, potatoes, and pasta dishes. Instead of relying on added oil for richness, this sauce uses the creamy texture of plant-based yogurt and the natural freshness of lemon to make everyday ingredients more satisfying.

Quick Nutrition Snapshot

• Fresh lemon juice adds bright acidity and a small amount of vitamin C while helping balance creamy flavors.
• Lemon zest adds concentrated citrus aroma, allowing you to build more flavor without additional oil or heavy ingredients.
• Plain plant-based yogurt creates the creamy texture of this sauce without dairy; nutrition will vary depending on the brand used.
• Unsweetened oat milk helps thin the sauce into a smooth, pourable consistency without adding sweetness.
• No added oil keeps this sauce light and allows the fresh lemon flavor to take center stage.
• Simple ingredients make this an easy homemade alternative to many bottled creamy dressings and sauces.

Ingredient Highlights

Fresh Lemon Juice and Zest
Lemon is the defining flavor in this sauce. The juice adds tartness and freshness, while the zest contributes fragrant lemon oils that make the finished sauce taste brighter and more complex. Using both creates a fuller lemon flavor than juice alone.

Plain Plant-Based Yogurt
Plant-based yogurt gives this sauce its creamy body and gentle tang. I use Culina plain plant-based yogurt because it blends smoothly with the lemon and creates a rich texture without added oil or dairy.

Unsweetened Oat Milk
Oat milk lightens the yogurt just enough to turn it into a pourable sauce. Choosing an unsweetened variety is important so the finished flavor stays savory, fresh, and balanced.

The Bigger Picture

A flavorful sauce can completely change the way simple plant-based meals feel. A tray of roasted Brussels sprouts, a warm farro bowl, a cucumber salad, or a baked potato becomes more inviting with a spoonful of something bright and creamy on top.

This Vegan Lemon Buttermilk Sauce fits beautifully into an oil-free and dairy-free kitchen because it adds contrast, moisture, and richness without masking the ingredients underneath. It is fresh enough for summer salads, versatile enough for meal prep, and simple enough to shake together in a jar whenever a meal needs a little lift.

Keep a jar in the refrigerator and use it as a reminder that one good sauce can make eating more vegetables and whole grains feel easy, flavorful, and genuinely enjoyable.

Vegan Lemon Buttermilk Sauce

Donna Spencer

Bright and creamy Vegan Lemon Buttermilk Sauce made with plant-based yogurt, oat milk, fresh lemon juice and zest. An easy oil-free and dairy-free dressing for salads, grain bowls and roasted vegetables.

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Prep Time 5 minutes mins

Chill 45 minutes mins

Course Dressing, Sauce

Cuisine American

Servings 4 servings

Calories

Ingredients

  

1x2x3x

• ▢ ½ cup unsweetened oat milk
• ▢ 5 tablespoons Culina plain plant-based yogurt
• ▢ 2 tablespoons fresh lemon juice
• ▢ Zest of 1 medium lemon
• ▢ ¼ teaspoon salt

Instructions

 

• Place the oat milk, plant-based yogurt, fresh lemon juice, lemon zest and salt in a jar with a tight-fitting lid.
• Shake vigorously for about 15 seconds, or whisk until smooth and creamy.
• Let the mixture rest for 2 minutes, then taste and adjust the seasoning if needed.
• Refrigerate for at least 45 minutes before serving to allow the flavors to meld and the sauce to thicken slightly.
• Shake or stir before serving.

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Keyword creamy vegan lemon sauce, Dairy Free, fresh lemon, oil-free lemon dressing, plain plant-based yogurt, plant-based milk, vegan lemon buttermilk sauce

❓Frequently Asked Questions

1. What is vegan lemon buttermilk sauce ?
Vegan lemon buttermilk sauce is a creamy, dairy-free finishing sauce made with plant-based yogurt, unsweetened oat milk, fresh lemon juice and lemon zest. Unlike a simple vegan buttermilk substitute used for baking, this version is designed as a dressing or drizzle for salads, grain bowls, roasted vegetables, potatoes and pasta dishes.

2. What can I use vegan lemon buttermilk sauce for?
You can use it over roasted vegetables, grain bowls, pasta, baked potatoes, wraps, or salads. It adds brightness and creaminess without dairy or oil.

3. Can I use Vegan Lemon Buttermilk Sauce in baking?
I would not recommend this recipe as a baking substitute because it includes plant-based yogurt, lemon zest and seasoning and is designed as a creamy finishing sauce. For baking, use a simpler vegan buttermilk made from plant milk and acid.