Roasted Cauliflower and Beet Salad with Walnut Vinaigrette

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A colorful roasted cauliflower and beet salad tossed in a tangy walnut vinaigrette, balanced with fresh greens for a satisfying Whole30 side or light meal. This whole30-inspired salads (whole30, vegetarian) ready in about 50 minutes pairs cauliflower florets, mixed salad greens, toasted and chopped walnuts into a side that holds its own next to almost any main — bright, balanced, and quick enough to slot into a weeknight plate. Each serving lands at about 280 calories and feeds 4, so it slots cleanly next to roasted proteins, grain bowls, or weeknight mains. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 35 min Serves 4 Whole30 cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F. Toss 4 cups cauliflower florets and 2 medium peeled, cubed beets with 2 tbsp extra virgin olive oil, 1/2 tsp sea salt, and 1/4 tsp black pepper. Spread on a baking sheet and roast for 30-35 minutes, turning halfway, until vegetables are tender and caramelized.
  2. Step 2: While vegetables roast, prepare the vinaigrette: whisk together 1/4 cup extra virgin olive oil, 2 tbsp apple cider vinegar, 1 tsp Whole30-compliant Dijon mustard, 1 minced garlic clove, 1/2 tsp sea salt, and 1/4 tsp black pepper until emulsified.
  3. Step 3: In a large salad bowl, combine 4 cups mixed salad greens, roasted cauliflower and beets, and 1/2 cup toasted, chopped walnuts.
  4. Step 4: Drizzle the walnut vinaigrette over the salad and toss gently to coat evenly. Serve immediately or chilled.

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Frequently asked questions

How long does Roasted Cauliflower and Beet Salad with Walnut Vinaigrette take to make?

Total time is about 50 minutes (15 min prep + 35 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Roasted Cauliflower and Beet Salad with Walnut Vinaigrette?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep cauliflower florets from drying out.

Can I substitute ingredients in Roasted Cauliflower and Beet Salad with Walnut Vinaigrette?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Roasted Cauliflower and Beet Salad with Walnut Vinaigrette for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Roasted Cauliflower and Beet Salad with Walnut Vinaigrette whole30?

Yes — this recipe is tagged whole30, vegetarian, gluten free, dairy free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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