How to Make It
Heat a medium cast-iron skillet over medium-high until hot. Add corn and oil; cook, stirring occasionally, until corn is browned, 5 to 7 minutes. Add cumin; cook, stirring occasionally, until fragrant, about 1 minute. Remove from heat; stir in bell pepper until combined. Transfer mixture to a large bowl.
Add beans, tomatoes, onion, cilantro, lime juice, jalapeño, and salt to corn mixture; toss gently to combine. Let stand 10 minutes. Serve.