Peel the sweet potatoes and shred them into thin, shoestring-style pieces. Using a food processor makes this quick, but a hand grater works just fine too. Shredding evenly ensures that the hash browns cook consistently.
Place the shredded sweet potatoes in a bowl and add olive oil, butter, salt, pepper, garlic powder, and optional chipotle chili powder. Toss until evenly coated so every bite has flavor.
Heat a skillet over medium heat and add the sweet potato mixture in small scoops, flattening each into a patty. Cook until golden brown on both sides, about 3–4 minutes per side. Serve immediately for best crispiness.