In a skillet, toast peanuts over medium heat until golden and fragrant, tossing often. Alternatively, toast in a 350-degree Fahrenheit oven for about 5 to 10 minutes.

In a large bowl, combine the cabbage, tomatoes, jalapeño, and cilantro and toss to combine.

In a small bowl, whisk together lime juice, olive oil, and salt. Pour dressing over cabbage and toss to combine. Just before serving, add peanuts. Adjust seasoning, if needed, and serve at once.