Wash 2-3 medium sweet potatoes under cool water. Peel them and cut into 1-inch cubes.

Combine 3-4 cloves of minced garlic, ½ cup of grated Parmesan cheese, 1 teaspoon of dried Italian seasoning, and salt and black pepper to taste in a bowl.

Drizzle 2 tablespoons of olive oil over the sweet potatoes. Toss to coat, then add the garlic-Parmesan mixture.

Preheat oven to 400°F (200°C). Line a baking sheet with parchment paper.

Spread sweet potatoes in a single layer on the baking sheet and roast for 20-25 minutes. Flip halfway through.

Transfer to a serving bowl and drizzle with melted butter if desired. Garnish with parsley.