cooking spray
½ onion, chopped
1 (16 ounce) package kielbasa sausage, sliced
3 potatoes, peeled and sliced
½ head broccoli, cut into florets
salt and ground black pepper to taste
Spray a large skillet with cooking spray and heat over medium-low heat. Add onion; cook and stir until onion has softened and turned translucent, about 5 minutes. Add kielbasa; fry until sausage is lightly browned, stirring occasionally, about 5 minutes more.