The Kielbasa Breakfast Casserole ... potatoes are thawed or the center may not bake completely. Dice the onion and bell pepper. You can do this up to a day before cooking to save time.
Add the onions and cook for 2-3 minutes or until they start to brown. Season with salt and pepper, then add the pierogi to the skillet with the onions and sear each side for about 1 minute or ...
3. In a large bowl, toss frozen pierogi and onion wedges with half of the melted butter and a pinch of salt and pepper; arrange on the baking sheet with the cabbage. Add kielbasa to the baking sheet.
Add the kielbasa and cook over moderately high heat until lightly browned, about 4 minutes. Add the onion and cabbage and ... Season with salt and pepper, stir in the rice and serve.