01 - Preheat oven to 375°F. Place bell peppers upright in a baking dish, drizzle lightly with olive oil, and roast for 10 minutes to soften. Remove and set aside.
02 - Place diced potatoes in a pot, cover with salted water, and bring to a boil. Cook until fork-tender, approximately 10-12 minutes. Drain and set aside.
03 - In a large skillet, heat 2 tablespoons olive oil over medium heat. Sauté onion and garlic for 2-3 minutes until fragrant.
04 - Add zucchini and corn to the skillet; cook for another 3 minutes until slightly softened.
05 - Stir in cooked potatoes, black beans, Cajun seasoning, smoked paprika, thyme, salt, and pepper. Cook for 2 minutes, then remove from heat.
06 - Lightly mash the potato mixture, leaving some chunks for texture. Mix in milk, half the cheese, and half the parsley until well combined.
07 - Spoon the mixture evenly into the pre-roasted bell peppers. Sprinkle with remaining cheese and breadcrumbs.
08 - Bake for 25-30 minutes until tops are golden and peppers are tender when pierced with a fork.
09 - Remove from oven, garnish with remaining parsley, and serve hot.