Pinto, Black, and Red Bean Salad with Grilled Corn and Avocado

INGREDIENTS

• 1 cup halved heirloom grape or cherry tomatoes
• 1 teaspoon salt, divided
• 3 ears shucked corn
• 1 medium white onion, cut into 1/4-inch-thick slices
• 1 jalapeño pepper
• 1 tablespoon olive oil
• Cooking spray
• 1/3 cup chopped fresh cilantro
• 1/3 cup fresh lime juice
• 1 (15-ounce) can no-salt-added pinto beans, rinsed and drained
• 1 (15-ounce) can no-salt-added black beans, rinsed and drained
• 1 (15-ounce) can no-salt-added kidney beans, rinsed and drained
• 2 diced peeled avocados