01 - Preheat oven to 425°F. Prepare a baking sheet for roasting.
02 - Toss diced russet potatoes with olive oil, smoked paprika, garlic powder, salt, and black pepper. Arrange in a single layer on the baking sheet. Roast for 25 to 30 minutes, flipping halfway, until golden and crisp.
03 - Heat a large skillet over medium heat. Add ground beef or plant-based alternative and brown for 3 to 4 minutes. Stir in onion and garlic, cook until softened, about 3 minutes.
04 - Add taco seasoning, tomato sauce, and water to skillet. Simmer on low for 5 to 7 minutes until mixture thickens. Adjust salt to taste.
05 - While filling simmers, rinse black beans, halve cherry tomatoes, dice avocado, slice jalapeños if using, chop cilantro, and shred cheese.
06 - Divide roasted potatoes among four bowls. Top each evenly with taco filling, black beans, cherry tomatoes, corn, shredded cheese, avocado, jalapeños, and cilantro. Drizzle each with sour cream or Greek yogurt.
07 - Serve immediately. Lime wedges and hot sauce may be offered alongside as desired.