Cook the Pasta:Bring a large pot of salted water to a boil. Cook pasta until al dente according to package instructions. Drain and set aside.
Brown the Sausage:In a large skillet, heat olive oil over medium heat. Add sausage slices and cook for 4–5 minutes, or until browned on both sides. Remove sausage from skillet and set aside.
Make the Garlic Butter Sauce:In the same skillet, melt butter over medium heat. Add minced garlic and sauté for 1–2 minutes until fragrant. Return the sausage to the pan and toss to coat in the garlic butter. Add Italian seasoning, salt, and pepper. Remove from heat and sprinkle with parsley.
Prepare the Parmesan Sauce:In a saucepan, melt butter over medium heat. Add heavy cream and garlic powder, stirring continuously. Slowly whisk in grated Parmesan until smooth and creamy. Season with salt and black pepper.
Combine and Serve:Toss the cooked pasta with the creamy Parmesan sauce until fully coated. Serve pasta topped with the garlic butter sausage bites and garnish with fresh parsley and extra Parmesan if desired.