Preheat oven to 400°.
Peel skin off of sweet potatoes and cut into cubes.
Add olive oil, garlic, parmesan cheese, Italian seasoning, and butter to potatoes and mix.
Spray a foil lined baking sheet with non stick spray.
Spread out the potatoes on the baking sheet and bake for 18 minutes.
Sprinkle with dried parsley and serve!