Cook the fusilli pasta according to package instructions until al dente, then drain and set aside.
In a large skillet, heat olive oil over medium heat.
Add minced garlic and sauté until fragrant, about 1-2 minutes.
Pour in the heavy cream and stir, bringing it to a gentle simmer.
Gradually whisk in the grated parmesan cheese until smooth.
Add garlic powder, salt, and black pepper; stir to combine.
Toss the cooked pasta into the skillet, ensuring it's well coated.
If desired, sprinkle in crushed red pepper flakes.
Cook for an additional 2-3 minutes to heat through.
Serve hot, garnished with fresh parsley and extra parmesan if desired.