In a large bowl, toss the cubed sweet potatoes and chopped red onion with olive oil, rosemary, salt, and pepper.
1 lb Italian sausage
Spread the vegetables in a single layer on a baking sheet.
Roast for 20 minutes, stirring halfway through.
While the vegetables are roasting, cook the Italian sausage in a skillet over medium heat until browned and cooked through. Drain off any excess grease.
1 lb Italian sausage
Add the cooked sausage to the baking sheet with the roasted vegetables. Stir to combine.
1 lb Italian sausage
Return the baking sheet to the oven and roast for another 10 minutes, or until the sweet potatoes are tender and lightly caramelized.
Serve hot.
Notes
This dish can be customized with different types of sausage or additional vegetables like bell peppers or Brussels sprouts.