Preheat the oven to 425 degrees F. Spray a baking sheet with nonstick spray or drizzle with olive oil.
Place the onions on one side of the sheet, then the brussels in the center. Place the sausage on the other side. Drizzle the onions, brussels and sausage with 2 tablespoons of olive oil. Sprinkle salt and pepper all over. Sprinkle with garlic powder.
Drizzle the onions and brussels with the balsamic vinegar. Toss if needed to coat.
Lay the pierogi on top of the onions. Drizzle with the remaining olive oil and sprinkle with salt and pepper.
Roast for 15 to 20 minutes, then flip everything (especially the pierogi!) and roast for 10 to 15 minutes more.
Remove from the oven and let cool slightly before serving.
Course: Main Course
Cuisine: American
Author: How Sweet Eats
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