Preheat your oven to 425°F (220°C). Toss the diced sweet potatoes with olive oil, smoked paprika, salt, and pepper until evenly coated. Spread them on a baking sheet in a single layer. Roast for about 25–30 minutes, flipping halfway through for even browning. Allow the potatoes to become tender inside while developing lightly crispy edges. Set aside once finished.
While the potatoes roast, heat a large skillet over medium heat. Add the ground beef and cook until it begins to brown. Break the meat apart using a wooden spoon. Once mostly cooked, stir in the taco seasoning and water. Continue cooking until the beef is fully browned and the liquid has reduced. Remove from heat and keep warm.
Blend the cottage cheese until completely smooth and creamy. This step creates a silky texture without noticeable curds. In a mixing bowl, combine the blended cottage cheese, corn, Mexican crema, lime juice, lime zest, chili powder, and Cotija cheese. Stir everything together until well mixed. Chill briefly while preparing the remaining ingredients.
Dice the avocados into bite-sized pieces. Chop the cilantro and prepare any additional toppings you plan to use. Drain the pickled onions if necessary and slice fresh jalapeños. Keep all toppings ready for assembly. Having everything prepared beforehand makes the final assembly quick and easy.
Divide the roasted sweet potatoes among four serving bowls. Add a generous portion of the seasoned beef beside the potatoes. Spoon the creamy street corn mixture into each bowl. Arrange it neatly for a colorful presentation. Finish with avocado, cilantro, pickled onions, jalapeños, and a squeeze of fresh lime juice before serving.