Step 1

Gently smash cucumbers with a rolling pin or the back of a heavy knife just to break open. Tear into irregular 2" pieces and place in a medium bowl; season lightly with salt. Let sit at least 5 minutes and up to 1 hour.

Step 2

Meanwhile, whisk chiles, garlic, vinegar, fish sauce, and sugar in a medium bowl until sugar dissolves. Let sit while cucumbers macerate.

Step 3

Drain cucumbers, discarding any liquid they have released. Add to bowl with dressing and toss several times to coat. Top with peanuts.

Step 4

Do Ahead: Dressing can be made 3 days ahead. Cover and chill.Read More: The 29 New Essential Recipes from the Bon Appétit Test Kitchen