Lemon-Mint Couscous Salad with Pickled Red Onions

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

A refreshing couscous salad brightened with lemon juice and fresh mint, topped with tangy quick-pickled red onions for a vibrant sour contrast. This mediterranean-inspired salads ready in about 20 minutes pairs couscous, boiling water, lemon juice 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 250 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: 20 min Serves 4 Mediterranean cuisine 250 cal/serving
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Ingredients

Instructions

  1. Step 1: Place 1 cup couscous in a large bowl, pour 1 1/4 cups boiling water over it, cover tightly with plastic wrap, and let steam for 5 minutes until water is absorbed. Fluff couscous with a fork.
  2. Step 2: In a small bowl, combine 1/3 cup white vinegar, 1 tbsp sugar, and 1/2 tsp salt. Add 1 medium thinly sliced red onion, tossing to coat. Let sit for at least 15 minutes to pickle.
  3. Step 3: To the fluffed couscous, stir in 1/4 cup lemon juice, 3 tbsp olive oil, 1/4 cup chopped fresh mint, and season with 1/4 tsp black pepper.
  4. Step 4: Drain the pickled red onions and scatter them over the couscous salad. Toss gently to combine and serve chilled or at room temperature.

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Frequently asked questions

How long does Lemon-Mint Couscous Salad with Pickled Red Onions take to make?

Total time is about 20 minutes (20 min prep + 0 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 Lemon-Mint Couscous Salad with Pickled Red Onions?

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 couscous from drying out.

Can I substitute ingredients in Lemon-Mint Couscous Salad with Pickled Red Onions?

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 Lemon-Mint Couscous Salad with Pickled Red Onions 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.

What goes well with Lemon-Mint Couscous Salad with Pickled Red Onions?

Mediterranean salads like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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