Place in a baking dish with sides. Add melted butter, rosemary, garlic, salt and pepper.
Toss to evenly coat all of the potatoes.
Spread potatoes into a single layer.
Drizzle with olive oil and top with parmesan cheese.
Add water to baking dish.
Bake for 30-40 minutes or until sweet potatoes are fork tender.
Christina's Notes
Add Savory Spices: Cumin, chili powder, onion powder, paprika, etc. or try a little cinnamon for the best roasted sweet potatoes.
Nuts: Try add some pecans or walnuts to the sweet potato, they can even be toasted on a baking sheet first for more flavor.
Variation Tip: Finish with fresh herbs like fresh parsley, thyme or add something sweet such as honey, brown sugar or maple syrup to taste for this easy side dish.
Alternate Ingredient/Substitution/Addition: Onions and apples are great in these roasted easy sweet potatoes. Different potatoes. Try russet potatoes, red potatoes or Yukon gold potatoes work in this recipe.
Overcrowd: For the best cubed roasted sweet potatoes do not overcrowd the pan. The potatoes will steam instead of getting super crispy on the outside.