3 tablespoons olive oil
1 medium yellow onion, chopped
5/8 teaspoon sea salt, divided
1/4 teaspoon pepper, divided
2 garlic cloves, minced
1 red bell pepper, chopped
1 can (14 ounces) diced fire-roasted tomatoes
1 can (14 ounces) red beans, drained and rinsed
1 can (14 ounces) pinto beans, drained and rinsed
1 cup vegetable broth
1 can (7 ounces) chipotles in adobo sauce
2 cans (15 ounces each) sweet corn wi…