This Light Cucumber Tomato Toss is a quick, high-protein salad ready in 10 minutes. Perfect for healthy weeknights, picnics, or party food. Low-carb, macro-friendly, and bursting with fresh flavors.

Ingredients

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Instructions

Step 1

Prepare your vegetables: Start by washing the cucumbers and cherry tomatoes thoroughly under cool running water. Pat them dry with a clean kitchen towel or paper towels; excess moisture can dilute the dressing and make the salad soggy. For the cucumbers, you can leave the peel on for extra fiber and color, or peel them partially for a milder flavor. Slice the cucumbers into thin, even rounds, about 1/8-inch thick. A mandoline slicer is ideal for uniform slices that absorb dressing evenly, but a sharp knife works well too. Halve the cherry tomatoes; if they are large, quarter them. Uniform pieces ensure every bite has a balance of textures. Thinly slice the red onion into rings; if you find raw onion too pungent, soak the slices in cold water for 5 minutes to mellow the bite, then drain and pat dry. This step is crucial for a crisp, refreshing salad that doesn’t overwhelm with onion heat.

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Step 2

Make the dressing: In a small bowl or a mason jar, combine the extra virgin olive oil, red wine vinegar, sea salt, and black pepper. Whisk vigorously until the dressing is emulsified and slightly thickened. Alternatively, seal the jar and shake well. Taste the dressing and adjust seasoning – it should be tangy and well-seasoned. If you prefer a milder acidity, reduce vinegar to 1.5 tablespoons. For a touch of sweetness, add a pinch of sugar or a drizzle of honey (but this may affect the low-carb profile). The dressing is the heart of this salad, so take a moment to balance the flavors. The oil-to-vinegar ratio of 3:2 provides a bright, Mediterranean-style vinaigrette that clings beautifully to the vegetables.

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Step 3

Assemble the salad: In a large mixing bowl, combine the sliced cucumbers, halved cherry tomatoes, and red onion rings. Pour the dressing over the vegetables and toss gently with two large spoons or your hands (use gloves if you prefer) until every piece is lightly coated. Avoid over-mixing, which can bruise the tomatoes and make cucumbers release water. The goal is a uniform, glossy coating. Let the salad sit for 5 minutes at room temperature to allow the flavors to meld – this short rest allows the salt to draw out a bit of moisture from the vegetables, creating a light, natural juice that blends with the dressing. If using optional ingredients like basil, feta, or capers, sprinkle them on top now and toss once more gently.

Step 4

Serve immediately or refrigerate: Transfer the salad to a serving platter or individual bowls. For best texture, serve within 30 minutes of assembling. If you need to make it ahead, store the dressing separately and toss just before serving. Garnish with extra basil leaves or a sprinkle of black pepper. This salad shines as a side dish for grilled chicken, fish, or steak, or as a light lunch on its own. The crispness of the cucumber and the burst of the tomatoes make every bite refreshing. Enjoy your Light Cucumber Tomato Toss!

For best results

  • Choosing the best cucumbers: English (hothouse) cucumbers are ideal because they have thin skin, few seeds, and a mild flavor. They stay crisp longer than garden cucumbers. If using standard cucumbers, peel them partially and scoop out the seeds with a spoon to avoid excess water. Always slice just before serving to maintain crunch. For a decorative touch, use a crinkle cutter for ridged slices that hold dressing better.
  • Tomato selection: Use ripe but firm cherry tomatoes; they should be bright red and yield slightly to pressure. Grape tomatoes are a good alternative as they are less watery. Avoid overripe tomatoes that are mushy. For maximum flavor, let tomatoes come to room temperature before slicing – cold tomatoes lose their sweetness. If you have time, halve the tomatoes and sprinkle with a tiny pinch of salt 10 minutes before assembling to concentrate their flavor.
  • Dressing emulsification: For a stable emulsion, ensure all ingredients are at room temperature. If using a jar, add oil first then vinegar and seasonings; shake vigorously for 30 seconds. The dressing can be made up to 3 days in advance and stored in the fridge; bring to room temperature and shake before using. Add a teaspoon of Dijon mustard for extra emulsification and flavor (adds negligible carbs).
  • Preventing sogginess: Salt draws water from vegetables, so dress the salad only when ready to serve. If you must prep ahead, slice cucumbers and tomatoes and store separately in airtight containers lined with paper towels. Onion slices can be stored in cold water in the fridge for up to 2 days – drain well before using. The dressing can be stored separately and combined just before serving.
  • Boosting protein: This salad is naturally low in protein, but you can easily add protein to make it a complete meal. Top with grilled chicken breast strips, canned tuna or salmon, hard-boiled eggs, chickpeas, or edamame. For a vegetarian option, add crumbled feta or cottage cheese. Each addition not only boosts protein but also adds new textures and flavors.
  • Storage and leftovers: This salad is best enjoyed fresh. Leftovers can be stored in an airtight container in the fridge for up to 1 day, but the cucumbers will release water and become soft. To revive, drain excess liquid, add a splash of fresh vinegar and oil, and toss. Do not freeze – the vegetables will become mushy upon thawing.

Variations

  • Greek-style variation: Add 1/2 cup crumbled feta cheese, 1/4 cup sliced Kalamata olives, and 1 tablespoon chopped fresh oregano. Replace red wine vinegar with lemon juice for a brighter, Greek-inspired flavor. This variation adds saltiness and creaminess, making it a heartier side. Feta provides about 4g of protein per ounce, boosting the overall protein content.
  • Herb garden variation: Toss in 1/4 cup each of fresh parsley, mint, and dill, finely chopped. The combination of herbs adds layers of freshness and pairs beautifully with the cucumber and tomato. This is perfect for summer when herbs are abundant. You can also add a minced garlic clove to the dressing for a punch of flavor.
  • Spicy kick variation: Add 1/2 thinly sliced jalapeño (seeds removed for less heat) or 1/4 teaspoon red pepper flakes to the dressing. For extra heat, include a dash of cayenne pepper. This variation pairs well with grilled meats or tacos. The heat contrasts nicely with the cool cucumber and sweet tomatoes.
  • Avocado twist: Add 1 diced ripe avocado just before serving. The creamy avocado complements the crisp vegetables and makes the salad more satisfying. Avocado adds healthy fats and fiber. Toss gently to avoid mashing the avocado. This variation is best eaten immediately as avocado browns quickly.
  • Balsamic variation: Substitute red wine vinegar with balsamic vinegar for a sweeter, more robust flavor. Add 1/2 cup fresh mozzarella pearls (bocconcini) and fresh basil. This Caprese-style twist is a crowd-pleaser. Use a high-quality aged balsamic for the best taste. The balsamic adds a touch of sweetness without extra sugar.

Nutrition

  • Calories145 kcal
  • Total Fat11g
  • Saturated Fat1.5g
  • Cholesterol0mg
  • Sodium295mg
  • Total Carbohydrates11g
  • Dietary Fiber2g
  • Sugars6g
  • Protein2g

Common Questions

Can I make this salad ahead of time?
Yes, but with a caveat. The salad is best when freshly made because cucumbers release water over time, making it watery. If you need to prep ahead, store the sliced vegetables and dressing separately in the fridge for up to 24 hours. Combine and toss just before serving. You can also prep the dressing up to 3 days in advance. For optimal texture, consume within 2 hours of dressing.
How can I increase the protein content?
This salad is naturally low in protein (about 2g per serving), but you can easily boost it. Add 4-6 oz of grilled chicken breast (about 26g protein), 1/2 cup canned chickpeas (7g protein), 1/4 cup feta cheese (4g protein), or 2 hard-boiled eggs (12g protein). For a vegan option, add edamame or tofu. The salad is a versatile base for any protein.
Is this salad keto-friendly?
Yes, this salad is low in carbohydrates and keto-friendly. One serving (without optional feta) contains about 8g net carbs (total carbs minus fiber). The main carbs come from tomatoes and cucumbers, both of which are low-glycemic. The olive oil provides healthy fats. If you add feta or avocado, the fat content increases, which is perfect for keto.
Can I use different types of vinegar?
Absolutely. Red wine vinegar is classic, but you can use apple cider vinegar, white wine vinegar, champagne vinegar, or balsamic vinegar. Each imparts a slightly different flavor. Apple cider vinegar is milder and slightly fruity; balsamic is sweet and rich. Avoid distilled white vinegar as it is too harsh. Adjust the quantity to taste.
How long does this salad last in the fridge?
Once dressed, the salad is best within 2 hours. Undressed, the sliced vegetables can be stored separately in airtight containers for up to 2 days. Cucumbers will gradually soften, so for maximum crunch, consume within 24 hours. Do not freeze, as thawing will result in a watery, mushy texture.
What can I use instead of olive oil?
Olive oil provides the best flavor, but you can substitute with avocado oil (neutral flavor, high smoke point), walnut oil (nutty), or grapeseed oil. For a lower-fat version, use a blend of oil and water or a yogurt-based dressing. Keep in mind that the texture and taste will change. Avoid coconut oil as it solidifies at cooler temperatures.
Can I add other vegetables?
Yes, this salad is very adaptable. Add bell peppers (sliced), radishes (thin rounds), carrots (shredded), or celery (diced). For extra crunch, add chopped nuts like almonds or walnuts. For more color, add yellow or orange cherry tomatoes. Just be mindful of moisture content – watery vegetables like zucchini may require salting and draining first.
Is this salad gluten-free?
Yes, all ingredients are naturally gluten-free. Ensure your vinegar is gluten-free (most are, but some malt vinegars contain gluten). Check labels if you have celiac disease. The salad is also dairy-free if you omit optional feta cheese, making it suitable for many dietary restrictions.