Preheat the oven to 400°F. Spread the corn kernels on a baking sheet, toss with 1 tablespoon olive oil, and roast for 15 to 20 minutes until lightly charred.
Heat the remaining tablespoon of olive oil in a large pot over medium heat. Add the onion, garlic, and red bell pepper and cook for 5 minutes until the vegetables soften.
Stir in the minced chipotle peppers, cumin, and smoked paprika. Cook for 1 minute until the spices become fragrant.
Add the black beans, diced tomatoes, and vegetable broth to the pot. Bring the mixture to a simmer and cook for 15 minutes.
Stir the roasted corn into the stew. Season with salt and black pepper to taste, then simmer for 5 more minutes.
Ladle the stew into bowls and top with fresh cilantro and a squeeze of lime.