Preheat oven to 400°F.
Toss butternut squash with 1 tablespoon olive oil, salt, and pepper. Spread evenly on a parchment-lined baking sheet and roast for 15 to 20 minutes until tender and golden.
Toss Brussels sprouts with 2 tablespoons olive oil, salt, and pepper. Roast on a separate sheet or alongside squash for 20 to 30 minutes until caramelized.
Cook bow tie pasta according to package instructions. Drain and set aside.
Heat 1 tablespoon olive oil in a large skillet over medium heat. Add sliced sausage and cook about 5 minutes per side until lightly browned. Remove sausage from skillet.
In the same skillet, add minced garlic and cook 1 to 2 minutes until fragrant. Stir in butter until melted.
Add cooked pasta to the skillet and toss to coat in the garlic butter sauce.
Return roasted butternut squash, Brussels sprouts, cooked sausage, and fresh thyme to the skillet. Toss gently to combine and heat through. Season with additional salt, pepper, and smoked paprika if using.
Serve hot garnished with extra thyme.