Golden-baked on the edges, tender and custardy in the center, and studded with caramelized sweet potatoes, sweet red onion, garlic, and earthy fresh sage leaves, this Sweet Potato Frittata is the ultimate plant-based brunch and meal-prep centerpiece! Made completely without eggs or dairy using a simple 1-to-1 whisked chickpea flour batter seasoned with nutritional yeast, golden turmeric, and a pinch of black salt (kala namak), this naturally gluten-free sweet potato frittata vegetarian and vegan recipe slices into neat, savory wedges that taste incredible warm or cold.