Garlic-Herb Roasted Sweet Potatoes with Parmesan

INGREDIENTS

2 1/2

lbs sweet potatoes (, peeled if desired and diced into 1-inch cubes (about 3 medium))

3 tbsp

olive oil (, plus more for serving)

3 cloves

garlic (, minced)

1 1/2 tbsp

chopped fresh thyme leaves

Salt and freshly ground black pepper

1 1/2 tbsp

chopped fresh parsley leaves

1/3 cup

finely grated parmesan

Melted butter or more olive oil (, optional)