Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Peel and dice the sweet potato into 1/2-inch cubes, then toss with olive oil, sea salt, and black pepper directly on the baking sheet.
Roast the sweet potatoes for 20-25 minutes, flipping halfway through, until they are tender and slightly caramelized on the edges.
While the potatoes roast, heat a non-stick skillet over medium-high heat and add the lean ground beef, breaking it into small crumbles with a wooden spoon.
Stir in the taco seasoning and continue to cook the beef until it is fully browned and no pink remains.
In the same skillet or a separate small pan, char the corn kernels over high heat for 3-4 minutes until they develop golden-brown toasted spots.
In a small blender or food processor, pulse the cottage cheese and lime juice until the mixture is completely smooth and resembles a thick crema.
Assemble your bowl by layering the roasted sweet potatoes, taco-seasoned beef, and charred corn in a deep dish.
Drizzle the blended cottage cheese crema over the top and garnish with fresh chopped cilantro before serving.