01 - Heat a large skillet over medium-high heat. Add the butter and let it melt completely. Place the sliced kielbasa in the skillet and cook until browned on both sides, about 4 minutes. Remove the sausage from the pan and set aside.
02 - In the same skillet, add the chopped onions and sliced potatoes. Cook for 6–8 minutes, stirring occasionally, until the potatoes begin to soften and develop golden edges.
03 - Stir in the minced garlic, diced bell pepper, and broccoli florets. Sauté for 3–4 minutes until fragrant and the vegetables begin to tenderize.
04 - Return the browned kielbasa to the skillet. Sprinkle smoked paprika, dried oregano, salt, and black pepper evenly over the mixture. Toss everything together until well combined.
05 - Reduce heat to low. Sprinkle the shredded cheddar cheese evenly across the top of the skillet mixture. Cover with a lid and let cook for 3–5 minutes, until the cheese is fully melted and the potatoes are fork-tender.
06 - Remove from heat, garnish with fresh chopped parsley if desired, and serve immediately while hot.