Step 1

Preheat oven to 425 degrees F and place the rack on the upper middle position.

Step 2

Cut the sweet potatoes into 1/2 - 3/4 inch cubes. You do not need to peel the potatoes first, but feel free to do so if you prefer.

Step 3

Place the cubed sweet potatoes on a large sheet pan or in a large cast iron skillet, making sure to spread them evenly so they don't overlap.

Step 4

Drizzle the cubed sweet potatoes with the olive oil and toss them to coat evenly on all sides.

Step 5

Season the sweet potatoes, according to your personal preferences, with salt and pepper.

Step 6

Place the sheet pan or cast iron skillet in the oven on the upper middle rack and roast for 15 - 25 minutes, until they are tender and beginning to brown lightly, checking at the midway point and flipping the potatoes so they brown evenly.

Step 7

Remove the sweet potatoes from the oven and sprinkle them with the minced garlic and the minced sage. Toss gently to evenly distribute the ingredients.

Step 8

Return the sweet potatoes to the oven and roast an additional 5 minutes.

Step 9

Serve immediately.