No-Cook Classic Tomato Sandwich with Basil Mayo

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

This simple no-cook tomato sandwich layers juicy ripe tomatoes with a fragrant basil mayonnaise on soft bread, perfect for a quick and fresh lunch. This American-inspired no-cook recipe (vegetarian), ready in about 10 minutes, pairs ripe heirloom tomatoes, mayonnaise, fresh basil leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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: 10 min Serves 2 American cuisine 280 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a small bowl, combine 3 tbsp mayonnaise with 10 finely chopped fresh basil leaves, stirring until evenly mixed to create basil mayo.
  2. Step 2: Lightly brush 1 tsp olive oil on one side of each of the 4 white sandwich bread slices to prevent sogginess.
  3. Step 3: Spread about 1 tbsp of the basil mayo evenly on the oiled side of 2 bread slices.
  4. Step 4: Layer the 2 medium sliced heirloom tomatoes (about 4-5 slices per sandwich) evenly over the basil mayo on each slice, then sprinkle 1/8 tsp salt and 1/8 tsp black pepper over the tomatoes.
  5. Step 5: Top each sandwich with the remaining bread slices, oiled side down, and gently press to secure.
  6. Step 6: Cut sandwiches diagonally and serve immediately for a fresh no-cook delight.

Frequently asked questions

How long does No-Cook Classic Tomato Sandwich with Basil Mayo take to make?

Total time is about 10 minutes (10 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 No-Cook Classic Tomato Sandwich with Basil Mayo?

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 ripe heirloom tomatoes from drying out.

Can I substitute ingredients in No-Cook Classic Tomato Sandwich with Basil Mayo?

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 No-Cook Classic Tomato Sandwich with Basil Mayo for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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 No-Cook Classic Tomato Sandwich with Basil Mayo vegetarian?

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