
Sweet potatoes and black beans are tossed with crushed tortilla chips and topped with cheese for a simple one-pan meal that will be your new weeknight go-to.
In a large, wide skillet, cover potatoes with cold water; season with 1 tsp. salt. Bring to a boil over high heat and cook until potatoes are tender, 4 to 5 minutes. Drain; wipe out pan.
In same skillet over medium heat, heat oil. Add onion, bell pepper, and 1/2 tsp. salt and cook, stirring occasionally, until softened, 7 to 9 minutes. Add chili powder, garlic powder, and cumin and cook, stirring, until fragrant, about 30 seconds more.
Add potatoes, beans, tomatoes, 1/2 tsp. salt, and 1/2 c. water and toss to combine. Bring to a simmer and cook, stirring occasionally, until liquid is mostly evaporated, 2 to 3 minutes.
Heat broiler. Add chips and 1/4 c. cheese to pan and lightly toss to combine (it’s okay if some of the chips break, but try not to completely crush them). Top with remaining 3/4 c. cheese.
Broil, watching closely, until cheese is melted and bubbling, 1 to 2 minutes. Top with cilantro. Serve with sour cream alongside.