Heat oil in a large skillet over medium heat.
Add diced sweet potatoes and sauté for about 10–12 minutes, stirring occasionally, until edges are golden and potatoes begin to soften.
Add diced apple and chopped sage. Stir to combine.
Cook another 5–7 minutes until apples are tender and sweet potatoes are fully cooked through.
Season with sea salt and serve warm. Optional: fold in pre-cooked protein for a complete meal.